It should be able to handle it on medium settings without issue. Depending on the additional options, i.e. AA, etc..., it should be able to do the same on high settings as well.
Better question: which one of the above notebook graphic cards (if any) would be able to handle WoW at ultra settings with low AA, etc. and play smoothly in most areas?
Working on those links, but essentially it's one of the following:
1. MBP 15.4" with i7 2.66GHz and 330M 512mb GDDR4 (not best obviously for WoW, but as long as it can run it on at least medium settings, I really do love these systems for all the other reasons) - $2070 (on discount from work)
Obviously this is a "splurge" for the hw you get compared to others, but I really like the macs so long as they can run WoW.
2. Sager NP8170 15.6" with i72820QM 2.3GHz and 540M 1GB VRAM GDDR3 - $1480
3. HP Envy 14-1100 14.5" with i5 460M 2.53GHz and ATI 5650 1GB VRAM GDDR3 - $1300
4. Dell XPS 15 15.6" with i7 840QM 1.86GHz and 435M 2GB VRAM - $1600