ASUS make nice gaming stuff, new laptops GX700, G752 and ROG G20 with i7-6700 and GeForce GTX980 are fantastic.
People are right, ASUS is in advantage to other brands, Alienware, Lenovo, etc...
They have own motherboards, graphics, sound cards and their gaming systems in future will dominate.
ASUS could customize everything if they want for own need, and others need to contact partners and deal with them.