Without Ronda on top of the division I think Alexis would have a solid shot against anyone else. Unfortunately she is facing Ronda who is so clearly on top the odds for this fight should be more insane than BJ vs Edgar.
I like Alexis, but she has struggled to finish fights pretty much her entire career, and she has a tendency to gas towards the end of the second. If she manages to last that long against Ronda it wouldn't be much longer once she slows down.
The only X factor for me in this fight is how long will Ronda keep it striking. With her last win via TKO and the talking she has done towards Holmes it seems clear she may be trying to turn into a solid striker as well. If Ronda plays dumb Alexis could potentially hurt her, but even then I still see Ronda securing the take down and the win.