At least the larger gloves favor his chin. Whether he wins or loses, i'm happy to see Andrei back in the action.
I don't buy into the speculation that Arlovski has such a bad chin. He has been (T)KO'd 6 times but look at who it was against. Brett Rogers, Fedor, Tim Sylvia, Pedro Rizzo, Ricco Rodriguez and then Viacheslav Datsik which was his first fight. It isn't like he get's KO'd by just anyone. All of those guys are heavy hitters.
I think his chin will be fine.