I actually like Nico's chances of beating Dance in a rematch. Nico was in control of their previous match and should have won. The late reversal he gave up was a big mistake, both technique-wise and tactically, but that is pretty easily correctable. However, Nico was able to get an early TD and get control of the match.
Gilman and NaTo may be more difficult. All these matches will likely come down to a single TD or go to OT. As we just saw, NaTo is tough to score on and I think Gilman is considerably improved from a couple years ago. Just going from memory (not completely reliable), Gilman has been more dominant than Nico this season against common B10 opponents. Nico CAN beat these NaTo and Gilman, but he'll have to wrestle near flawlessly and get a TD at some point.
As far as final NCAA placement, I'd say 3rd place is most likely, followed by 4th, 2nd, and 1st, in that order.