For gaming I would definitely focus on the graphics card as it is the most important at this stage since the two processors from those laptops will give you the same gaming performance as no game at this point in time and near to come, will take advantage of all they have to offer... I would recommend you go for the
MSI GE72 APACHE PRO-242 17.3-Inch Gaming Laptop.. This laptop has a very good processor also, but what puts it ahead is it's NVIDIA GeForce GTX970M with 3GB GDDR5 graphics card which is better than the gtx 960 and 965...So overall, this laptop will perform better in games,,