I would pick Dawson to beat Kessler.

Dawson is just as good as Kessler fundamentally but is faster and more atheltic.

His ability to put fast combinations together is impressive and against Kessler he would use that to keep Kessler on the defensive.

Kessler does have a good chance in this fight though based on his very solid jab and the power in his right hand that would possibly cause Dawsons problems. Dawson does seem to lose focus half way through his fights and Kessler would probably be able to take advantage of that also.

I say a 8-4 decision for Dawson.