I agree with your point about Sagna and Özil but from my point of view they were the better team.
I don't want to write a book here so I will only analyse the first half from my point of view
Klopp had a really good plan against Arsenal. If you watched how awesome they defended in the center and take out our offensive, with their wide players they at least doubled our ball carrier and force him to play the ball back to our defenders and after that they rushed into pressing unlike us (before the 30min mark). Dortmund overload the flanks really good but didn't play a good final ball, if they would have played more accurate and had rotated better in the final third they could have scored "easily" also Reus wasted a good counter with a try from roughly 30m distance. I have to mention that our defense players don't get pulled out of position, really good performance at the first half. Anyways after Gibbs and Sagna started to play higher and Arteta dropped deeper we came into play (around 30min mark) but sadly we suck at crossing with the current lineup, we also started "high pitch pressing" at this time.
We had two chances in the first half, the goal which happened cause of the mistake from Subotic cause without his touch Weidenfeller would have caught the ball, I also have to mention here that Wilshere really good pulled Schmelzer out of position before the Sagna cross that was a really intelligent move from him sadly mostly the guys here on the forum simply didn't mention or notice some of these things (call me fanboy once again but Podolski regulary made some moves (mostly for Gibbs) like that and never gets any credits for that too). The second chance was the shot from Rosicky after a mistake from Schmelzer.
Klopp outcoached Wenger at that day.
Just my 2 cents.
Gooner_Gaz wrote:also ive heard alot of people slating sagna for thier winning goal i think thats unfair, ozil shud have tracked back when we were attacking, he will get that drilled into him
Özils defense work is poor/not existing since he starts to become a professional football player, I already mentioned that he will kill our balance against top level teams especially if he plays alongside some other Arsenal midfielders who never learnt to track back (but I don't want to name any names here cause the usual suspects will jump on me again) before we got him and earned some shitstorming here there is a reason that all his coaches so far criticised his defense "work".
Edit:
"right" replaced with "write"