So what? There's nothing seriously limited about the pentatonic scale, it's the most commonly used scale in music from all around the world. It's the foundation of blues and rock music, and a lot of folk music, and since that's what Page's music is derived from, rather than being derived from neo classical music like Petrucci is, of course he prefers the pentatonic scale.
Saying a guitarist is better based on what kind of scales he uses is just ridiculous. It's all about how you play, not what you play.
I'm no muso, but I don't think I have to be to know that you don't know as much about music theory as you want us to believe.