Well, seeing as though all of the adobe applications and final cut, and various music editing programs were made on macs, Graphic design, and video and music editing.
Trust me, Macs run a lot better with a lot of programs. It's amazing when you have a really good PC and a really good mac, and compare the two.
I don't know my opinion on the whole debate.
However, contrary to some people's belief, Intel chips will not make macs and PCs the same. They still run differently, and I think that mac is still UNIX.