Hypersmurf
Moderatarrrrh...
WHAT? John is a better Guitar player because he plays Keyboard? Even though Simon is a whole 2 grades above John in Guitar ability?
Three things:
1. Part of John's advantage over Simon is that he's "high ability" - bigger Cha modifier. End result - even with less ranks, he has a better average result.
2. If John's put all that work into guitar, it means he's spent more than one rank in Perform. He actually has several other performance types he's capable of, but he doesn't want you to know about them, because whenever people hear he does ballet, jazz, and tap, they call him a sissy.
3. Game mechanics! Not real life! Have you noticed a first level bard could potentially know, what, 41 languages? And learn nine more every time he levelled? Not real life! Not real life!
-Hyp.