Mendeleyev v. Preston

So, by process of elimination, it seems that Lev and Preston will be competing in the battles. Can anyone explain to me how someone could possibly pick one of these two very different voice types over the other? My only guess is that Blake will steal the loser, though it's a major loss for John's team regardless. Why would he pair those two together?? Both baritones?

Anyway, would love to hear your thoughts on this ill-fated battle selection!