Re: This is going to sound weird, but...
Nemesis Kid's power is one of those really vague, open-to-interpretation types. But yeah, it doesn't seem to follow that Nem could defend himself against Karate Kid, but is helpless against Projectra's I-just-acquired-them-out-of-nowhere mad fighting skillz. And I can think of at least one story where Projectra's illusions did work against him, precisely because they weren't a direct physical attack. Oh, well.