You're starting to make me wonder if you ever heard anything by Thin Lizzy, you're actually comparing Avril's guitar skills with the skills of the Thin Lizzies!?
I'm not talking about the goddam rhythm, I'm talking about the intense guitar-solos that no one else can compare with.
The lead singer plays both electric guitar and the base guitar, have you even heard his base-solo in "Dancing in the moonlight?" Didn't think so.
You're probably too young to have heard anything by Thin Lizzy anyway, judging by your child-like "I'm right and you're wrong" attitude.