Could you give me one reason why what Podolski did is not cheating and a dive is ? One objective reason. Just like Robben hopes the ref will not see his dive, Podolski hopes that the ref will not see his push on Lahm. Where is the difference ? The only difference is that Robben does not play for Arsenal. You wouldn't talk about cheating if an Arsenal player would dive (remember Santi Cazorla last season against - i think - Stoke, Arsenal won that match because of a dive, was there any outrage over here ? I don't think so).
Would you have moaned about the diving and the dark side of Bayern if Arsenal would have been qualified ? No you wouldn't.
I agree with what you write about the rules, but not about the refs. Did you actually ever try to be a ref ? I do it regularly for my son's team. I've been a player, a coach and a ref, being a ref is by far the most difficult thing to do on a pitch. Although your post is a very good one (they usually are, i like discussing with you), i don't agree with your example for the disallowed off-side goal from Barcelona. I agree that it wasn't off-side, but i only was convinced about that after 3 slow motion replays...the linesmen had to watch between a wood of bodies and legs and there were indeed two Barcelona players off-side...IMO they didn't influence the play, but that is open for debate...i wonder how many people here would have made the correct discussion (and even now i tend to agree with you, but i'm not sure it was the correct decision). In fact, your example is the perfect example that the rules are far too complex...why not change the off-side rule ? Why not a a line 10 metres outside the box. If a ball comes from within that distance, players never can be off-side (for example, it's only an example how the rules could be changed) ?
Oh, and don't take what i write personal...Bale's diving never outraged me like Ronaldo's diving...i'm not above all this...i'm just the same as most other fans...and perhaps monday i will moan about the ref after Spurs' defeat against Arsenal, that the first goal was off-side and that one could argue that the fifth was preceded by a push that the ref didn't see...
To me it's very simple: fouling isn't cheating, it is simply an infraction. We would have to get inside Podolski's head to know if he did that in a deliberate way or just as a part of the game routine. You see a nudge like that hundreds of times, but usually a foul is given. We are only having this disussion because nothing was given, bizarrely.
On the other hand, with a Robben dive you don't have to be a mind reader to know what he is looking for.
I'll give you another example about fouling: Vincent Kompany had a great game against Barcelona IMO, but I have to say I lost count of how many fouls he committed. It must have been double figures. Many times against Messi and Neymar he stopped them with fouls, breaking up playing flow. However, I cannot call that cheating. Especially not in the same bracket as diving. Otherwise, every foul is a piece of cheating.
Ironically, Kompany only got booked for a Neymar dive!
If the governing bodies are to sanitise the game and consider every foul a form of cheating, they should include a rule like NBA basketball. After a certain amount of personal fouls, the player is out.
Either that or some sort of punishment for collective fouls - now that would sort out the practitioners of the dark arts like Guardiola who constantly look to stop play with fouls on the offensive half, in order to regroup at the back.
This is something to think about, because professional fouls are a cynical part of the game, when the player "takes one for the team". Most of those are already met with punishment with yellow cards and, if the player is the last man, red cards.
I agree with you about the bias thing, we don't get as angry when one of our players cheat. The Cazorla dive was in the 2012/13 season against Sunderland if I remember correctly. I wasn't proud of that but I agree that we're not as angry as when an opposition player dives. Every supporter has some sort of bias.
But what's really important is the fact we didn't see Cazorla ever diving again after that incident. Maybe Wenger talked to him about that, as it was his first season in the Premiership.
Whatever happened, I never saw any more of that.
Before that Cazorla dive, I'd have to go back to Eduardo's dive. I can't remember anything in between.
It's funny that Wenger's more recent Arsenal sides got a reputation of being softies who can't handle physicality and "don't like to be kicked a bit". Because when you look at teams like Stoke, for as much as they're labelled as tough, they dive way much more than Arsenal. I can remember a handful of dives by that fella Walters alone.
Sorry, I digress. I'd just say we shouldn't mention an isolated incident of a Cazorla dive over an year ago, to try to better accept the behaviour of a repeat offender like Robben, who systematically dives at all levels: in domestic cups and leagues, in the Champions League and at the World Cup too.
As for the refereeing, I know it must not be easy and I appreciate your angle: someone who officiates at amateur level. Even then it must not be an easy task, and I can only imagine that, because I have never tried it myself.
But I'd like to think that a professional linesman, well paid to do what he does, would get it right for a call like the Jordi Alba offside.
Either way, be it an unavoidable human mistake or poor officiating, it raises the question of the use of technology again. I don't mean to sound like a broken record, you know I'm for using technology, but I just remembered another example: in the 2010 WC, Argentina scored an offside goal through Tevez. While the Mexican players remonstrated with the linesman, the guy in charge of replays in the big screen showed it for all the stadium to see it.
The Mexicans saw it, the Argentines saw it, and the Italian officials saw it. You could see on the ref's face he wanted to go back and rule out the goal, but he also knew he couldn't. All because of the stubborn stupidity of FIFA.
Anyways... Regarding the North London derby, are you expecting a fifth goal from Arsenal? At White Hart Lane? Haha, you can't be serious!

Given the circumstances, a draw wouldn't be a bad result for Arsenal.