I would love to see a Samuel vs Sylar battle. Samuel has only his terrakinesis while Sylar has multiple abilities, although, I have to say Sylar has an edge over Samuel because of his newfound ability to fly. I wonder, if Samuel achieves his goal to enhance his own power exponentially, could his terrakinetic power evolve to allow him to release seismic energy (powerful waves of vibration that can shatter objects etc)?

I really do not understand how Sylar's main ability to understand how things work allows him to copy any ability he studies. I mean, it's not like he is absorbing his victim's abilities! The writers should have only allowed Sylar to learn powers that are psionic in nature, as that is related to his main intuitive power.