Fedor only won 1 fight in a cage (vs Rogers, technically he also ''won'' vs Maldonado but that wasn't a win, it was a draw at best) and lost all the other ones while also looking like shit.
I don't buy the out of the prime excuse that's thrown around, after getting battered in Strikeforce he looked like a world beater again in the ring, he dismantled Jeff Moonson with a flawless performance and went on a nice winning streak again (ok admittedly the competition wasn't stellar but still...he even struggles against cans in the cage while he beats them handily in the ring), what is it with a cage that undermines his game, if anything?