If he loses every draw, I'd say that single aspect is similar to a goalie who stops everything accept the high stick side which he always lets in.
I can guarantee you he won't lose "every single" draw. That would be pretty hard to do. But like you said, he'll defiantly have to work at it if there's any chance this works. The reason Bozak is so key on that Kessel/Lupul line is the fact that he wins a good portion of the faceoffs. Get's them playing offense as soon as possible. I don't expect much out of this experiment.
I doubt it'll work out, since he has played ZERO center at the NHL level so far. This seems like a desperation move by the Leafs, similar to Chicago trying Kane at C because they had a huge hole at 2C. Really hope it does work out, because in terms of size and skill he offers a lot more than Bozak, but I'm not particularly optimistic.