I have an i7-4720HQ(4th Gen), 980M, 32GB RAM, and 4X 256GB m2 SSDs in MSi's "Super Raid 3" Non GSync model. The i7-5700HQ(5th Gen Broadwell) in the model you linked is about as powerful as a 4th Gen i5(non k)/Xeon which is pretty damn good for a mobile chip. The GTX 980m is about as powerful as a desktop R9 380, also pretty nice for a mobile chip. MSi informed me that they produce their own MXM GPUs for the GT72 and that will carry over to at least the Pascal generation as well (likely between $500-1000 depending on model for upgrade)
Currently, I am able to max out most games and retain near 60FPS@ 1080p. The following games are with maximum settings: GTA V is right about 55-60FPS, Fallout 4 is about 40-60FPS with a bunch of mods installed depending on location, Metal Gear V sees me at about 60 FPS, Witcher 3 runs about 35-45FPS depending on location, Metro LL is usually above 60FPS, with rare drops below. I don't have all the latest games, but I have a library of close to 1k steam games, so if you want me to test something specific I can let you know. I would expect the newer model with the 5th Gen i-7 5700HQ to be maybe 1-3FPS higher than what I achieve, but while using a little less power.