Not really. More complex models
I played AND raided (well, only karazhan) in TBC on a laptop with 1 GB RAM and an Intel Celeron CPU with integrated graphics
I'm pretty sure it wouldn't be able to run WoW at all now, hehe.
After 4 years the laptop with T6600 and 4 GB of RAM ran only slightly better.
WoW, like most of the games, does not make a good use of extra cores, and single core performance is the most important thing.
Well, I guess only the OP can tell us how would the game work, after he tries.