Anything near lightheavy its Foster all the way...Moorer just didnt prove he was the monster everyone seems to think he is against decent opposition when he was at lightheavy..Plus as been discussed before he was having a hard time making the weight especially towards the end of his reign. He was more myth then reality at 175. I say Foster stops him late in the fight. I would go with Moorer at heavyweight. That lady in your avatar has excellent lungs.
True, foster was just a monster (heh it rhymes, foster and monster) at 175lbs Yep, that lady is 38 years old and still looking sexy :hey
At 175 Foster by brutal KO, and early. At 173 on the other hand I see it being a very tactical affair, with Moorer using his greater depth of skills at the weight to push Foster to the brink. Moorer also had a better chin at 173, while Foster had issues with stamina, so I think that while Foster is capable of catching Moorer at any time, Moorer would use his wilyness and boxing craft to take a decision.