Also, instead of talking down on Ancelotti, it will be more beneficial if you praise Arteta instead. The man has been doing a good job for the past 3 seasons now. This could be his season of glory.
Arteta has brought Arsenal to a position were they can beat absolutely anybody and there is no doubt that he deserves as awful lot of praise. Arsenal has a very good chance of winning the CL this season, and who is to tell them otherwise, they just beat the 15 time European champions. Next on their agenda is a SF tie with PSG and IMO, that game is 50-50, there are no favorites, so nobody can write off the Gunners.