In my opinion WOW may be better than Guild Wars, but for only very select and specific reasons.
1. Larger more friendly player base.
2. Constant updates and new content due to the monthly fee.
3. It is developed by Blizzard. <3
However OP CharlieN133 may want to play Guild Wars as he does not, or cannot pay the hefty monthly fee of WOW. This is supported by the fact that he has an Intel P4 processor, but that is neither here or there.