Usually guys like Houston who have 1-2 first round knock outs get too confident and loose the fight, look at Terry Martin as an example. Not to mention any fighter who now approached Houston would obviously pace themself in a defensive manner and tire him out! I wouldnt say Houstons cardio can compare to Rashad's. Not to mention the big mystery behind Houstons ground game. He might be able to defend himself but im sure he is winning NO fight on the ground.
All in all im much more interested inwatching this fight then i am with Titto and Rashad.