yeah, not really sure that Arsenal have a deep squad. Once the top like players are out, the break downs occur because the players coming in are not up to scratch. For me there are a few players who statistically play when the team plays awful. Man City and Chelsea have greater depth, players can fill in and the team can still achieve great results.
The change in formation late in the season was a major reason for Arsenal's dramatic improvement in form.
the thing is, as we have seen we have become accustom to failure and glorifying it ... its always the same and to top it off this time, spurs are in the champions league ...