Just to confirm we are considering the same models here, these two?
http://www.xoticpc.com/msi-ge60-apache629-p-7777.html?wconfigure=yes
http://www.xoticpc.com/msi-ge60-apache-pro003-p-6958.html?wconfigure=yes
If so, then the 629 features a slightly faster processor but a weaker graphics card (GTX 850M vs GTX 860M) so, in most gaming situations, the laptop with the better graphics card would be the preferred choice since the 100MHz difference between the two processors is near non-existent.
One thing I found is that there are two iterations of the GTX 860M, one a Kepler based, the other (newer) Maxwell based found here
http://www.notebookcheck.net/NVIDIA-GeForce-GTX-860M.107794.0.html with very slight performance differences...