I wonder just how powerful power bombs are? According to Adam, they can vaporize humans instantly. Funny, they go off right next to Samus all the time and she's no worse for wear. But then again she's not human. Or her power suit can withstand explosions that would incinerate humans without breaking a sweat. Or both.
Either way, it does not bode well for Master Chief, who can be killed by regular human grenades even in his Spartan armor. The kind of grenades that do not instantly vaporize humans.
Power bombs aren't some kind of special, end-game one-hit-kill weapon like the Hyper Beam. They're a regular part of Samus's arsenal. You usually get them around the mid-point of Metroid games.
So, we're done here, right?








