I know but Arsenal reached the final in 2006 so it's very fine margins that go beyond simply the responsibility of the manager. Actually the reason I didn't mention the Champions League was because you said a decade so I assumed you were skipping over the FA Cup in 2005 and were referring to solely domestic leagues - not that I'm saying an FA Cup equals the Champions League, I'm just saying that it's very thin margins which decide cup competitions.
RU 2005, and Serie A 2011, so 4 year stands , even with Berlusconi mailing it in and the Calcio Poli to boot..
Arsenal has got basically only United from 2008 on to deal with, and the later were hardly splurging a la Barca/Bayern/Madrid..Results: pathetic empty-handedness and mental midgerty seared into the group psyche for a decade..
Regarding this, Arsenal are not as rich as Chelsea, United or Man City so I believe comparing Arsenal to Bayern, Real and Barca goes a bit too far. They are not historically as successful, financially as strong or globally as big.
The reason Arsenal fans have such high expectations is because Wenger propelled them to the top of the game domestically and to an extent in Europe, and in this era of super-clubs Arsenal have been near the top - but to slip from that point fits in with their history. They are a great club but are not as big as the above three, nor as big as Milan or Juventus, so I believe the comparison is somewhat flawed.
Now I'm sure it's hugely frustrating to be an Arsenal fan, especially with results like today and the lack of even domestic cups, and I am genuinely interested to know whether a top-four finish and the FA Cup would be considered a successful season?
But I genuinely believe that expecting Arsenal to win the league in any given season is quite unrealistic given the financial clout of their opponents, and the same goes for continental competition.