Going to stick up for Craigos's men, I think Inter are being horribly underrated here. You could look at the fact that they've won Serie A four seasons running, are on course to make it five and have just beaten Chelsea at Stamford Bridge. But all you really need to do is look at their players. Against Chelsea:
Julio Cesar
Maicon, Samuel, Lucio, Zanetti
Stankovic, Cambiasso, Motta, Sneijder
Eto'o, Milito.
Top class players all over the pitch.
Arsenal can beat them for sure, Arsenal can beat anyone on their day. But I don't think they will most of the time.