Wenger was a 100m manager with a 50m budget, while Arteta is a 25m manager with a 50m budget.
And what I mean buy that is that Wenger had his way that he wanted to play, but didn't have the players to do it. And that really showed up in the big matches. They were short track bullies, but couldn't do it when it mattered most. But that wasn't Wengers fault. Give him a budget, and he would have provided results...
Arteta on the other hand seems to know exactly what he's getting into. a 5 man defense is the last thing he wants to do. He wants to play a free flowing 4-3-3 but he just doesn't have the team to do it. So he has recognized this and resorted to the 3-4-3. Not because it's his preferred formation, but because it's the only formation that will work with Arsenal because their defense is so poor. And it may work for some games. But this is not the Arsenal that i grew to hate. The Arsenal that I know would rather look good and lose than look bad and win. This Arsenal team is a shadow of the Wenger teams and will be lucky to finish in the top 6...