Re: Gods with Off Switches vs. Loaded Guns. DC vs. Marvel in Character Design.
It's summoning Superman, he'll help him out, because it's Superman's nature, not because Jimmy asked it of him. Think of it as summoning an angel to fight a demon, yeah the angel isn't going to do what you say, but he's going to slap the demon around. The special effect is Superman flying in a whirl of blue, red, and yellow.
That's right, everything is basically up to the GM on Jimmy's powers, it's not like he really ever chooses his powers, they just happen to him. I complain that a 250 point Superman needs the universe rewritten to make him useful.