Originally posted by DTM
Going with Superman for the win. Neither Sinestro or Magneto themselves has the durability to take several hits from Superman (yes they have protective shields, but they themselves are generally not super tough). Superman will take his hits, he will push through, and he will use his powers to their fullest to defeat Mags and Sin here. Hes fought stronger and tougher and won out in the end.
I can't recall Magneto's shields ever being broken through sheer force - not even Thor's hammer toss has done it.
I don't generally think of Magneto as on Superman's level, but his durability surely is. Together with Sinestro, they win.