Tebow is a winner. If an offense were properly designed around him he could win a lot of games for you. 
His passing ability isnt that much better than Fitz's unfortunately. A big strong man,good runner,instinctive winning football player with a rubber arm.So as just the starting QB...Id say better than Fitz but not one to hang your hat on. 
Would drive us less insane than Fitz does. 
I would love to have him in an option role--combo RB,FB,backup QB. He can run and is a bull--very hard to bring down and deceptively fast. 
Main thing is that the guy knows how to play winning football. It may be a bit ugly--but its winning football. 
  
 
Same with  Larry Czonka. Yes he does seem slow twitch--but he gets there. QB,FB type..ends up getting down the field although he looks lumbering doing it ala Czonk.