Carkey,

This isn't really a technical forum, or even a computer forum. check out www.tomshardware.com as a starting point for processor information, and check their links and forums.

The short answer is that AMD is better performance per dollar. AMD don't really copy Intel, but obviously as they produce the same things you do see parallell evolution, but that's like saying "BMW copied Mercedes!!!! their car has four wheels!!!!!"
AMD does -not- always win in power tests.
The fastest Intel setup will be faster than the fastest AMD setup for encoding and editing, but is probably around twice the price.