Hard fight but i don't think Mc would win, he dies first, Samus and Ironman are probably at the same power level so its gonna be draw between them i think.
I use to have hulk buster armor Ironman and scuba ironman when i was a kid. All the pieces were long gone by the end of the week leaving my figure armour less and in his iron pajamas
Gender: Male Location: Following the Source of Light.
Depends on what armor Tony is wearing at the time. His standard armor is an adamantium alloy (adamantium being an unbreakable metal in its pure state and really darn tough when alloyed with other metals). It has several power generators and any number of backups. He's got shields strong enough to take blasts from guys like Thor and the Silver Surfer. The Iron Man suit has its own computer that can assist with flight, targeting, and in-battle analysis. The computer can also hack other technological systems. Standard weapons include a Uni-Beam (fired from the chest) and repulsors (fired from the hands). Tony supes up his suit every other day, so he often includes guided missile launchers, mines, and EMPs.
Most of the Iron Man armors are capable of lifting 70 tons and can move more if fed appropriate amounts of power. They can also fly and maneuver at great speeds.
I think Iron Man has all the advantages here. Samus is tough and resourceful, but Tony has her outmatched here.