I know Arce is greater and better P4P, but I'd pretty confidently take Romero by KO here. Too big and powerful for the smaller Arce.
neither one did much that was noteworthy at at 115. romero has a very overrated resume aside from blowing out grey for the title. arce at least had some decent wins at 112. arce fucks him up, he wasnt smaller by any means he was a major weight felon in those classes.