They both suck but if I had to pick I'd take TB over CW. Bowden has some of the Zooker in him, he'll lose a lot and often lose to some team he has no business losing to but every once in a while he'll beat someone he shouldn't.
Despite what the Domers will tell you CW has yet to register a signature win over anyone of note (that means I don't count a close loss to USC or Hawaii as signature wins).
If you held a gun to my head and said I had to pick one of them to be the next HC at
OSU I guess I'd take Bowden...then I'd think about it a minute or two longer, tell you to [censored] yourself and just go ahead and shoot me.