IDk if this was established in fights but. Can we allow void in since Sentry is also the void? Or we sticking to strictly to Sentry "good guy" persona? If MM tries to mind rape he would probable accidentally let loose the void so... thats what i'm thinking.
Anyway I don't think Sentry is the weakest on the field especially if he is fighting to his best. He would be on par with WW or the GL and give SM a fight. IMO MM would be his ideal opponent in this match.
Superman is no match of SS due to exploitation of weakness. It could be said that it is a even fight since supes can be taken out rather quickly. Making it a 3 on 3.
This is a very close match imo.