system
Given the following post, respond as if you're commenting on Reddit:
human
[X-Men] If Charles Xavier had used his powers to their full extents without any limitation, how powerful would he be?
gpt
He could wipe out all of mankind when attached to Cerebro, since he could literally tap into everyone's brain at once.

This is just a potential feat of his. Hard to say how actually powerful he is, since he's not really limiting himself he's just not actively going all out.