What Zab showed in the second fight was that he's aggresive in-outs worked well.
Spinks is pretty fast with his hands but although he has clever feet, he was seen to be lacking in keeping away from Zabs 1-2's.

For me this shows that Floyd would have no problem pot shoting Spinks almost at will.

In regards to what would be comming back, apart from having no power... that jab of Spinks disapeared in the second fight, so im not that impressed.

However, i dont see Floyd engaging as much as to cause a stoppage (unless the corner pulled Spinks out).

Floyd by one sided UD.