In the fight with Tito did Rashad even try to take the fight down? If he was to just try and stand with Houston then I'm gonna go with Houston, but if he tries to go down then I think Rashad would probably take it, thats only because I don't know what Houston can do. I highly doubt he sucks on the ground, so in the end I think I'm gonna go with Houston for the win, probably by TKO.
On a side note I read that Houston could be fighting Thiago Silva next. I wish these people would make up their minds.