Right now you have to go with Weidman because he has GREAT TD's and is unlikely to get submitted while on top like Chael.
But I would not bet on him to beat Andy though.
and also, Andy would tool Lombard.
Bipsing has vitually no chance to even come close to beat Silva. Belfort ...we saw the result already...Okami is a tough matchup for anyone...except Andy obviously, we saw at UFC 134 that Okami looks terrified vs Andy...Belcher is not a threat to Andy right now...Jacare wouldnt fight Andy but would lose anyway...Rockhold would look like an amateur too...
Honestly, Weidman might have a chance, the rest are cannon fodder