Going by in-game canon of each character? Samus alone could wipe out the entire PSAS roster.
I just talked about in the post right above yours. A single shot from her standard power beam is equivalent to 1/8th of Earth's yearly energy consumption, and being able to survive in 850x gravity would mean she's strong enough that bullets would not even dent her. Again, if you want detailed number crunching proving this, look on factpile.
I come to GameFAQs to be an a-hole and create strife /hate on forum message boards. -GeassMaster