Thurman by KO. I still don't really rate Maidana that highly. The technique in his overhand right is too sloppy. Thurman will use his lateral movement and counter him hard. Eventually one of these counters will wobble him and that's where One Time would go in for the kill.
I think the key here would be the corner. I dont know enough about Thurman's trainer. I think its who used to train Winky though. To answer thread question, I would say Thurman, by TKO, late rds.