Macbook pro 15inch 2017 base model problem

Check W10 is not using you display at max resolution I think your Apple default is a less than you think these may also account for your battery life along with brightness settings

 

Check and compare available RAM on both computers. Seems like you may have bought one with 8 GB RAM,the base model of the MacBook Pro is generally rather useless for gaming. Apple never designed their laptops for playing games,so if you still want to do that,you need the top premium models,not the basic ones.
If gaming is all you want it for,sell off the MacBook,and buy yourself a decent dell Alienware windows laptop.

 

Maybe you should PS4 ??

 

Should work ok,but as I said,no MacBook ever been a really good gaming machine,it's not designed for games.

 

The smaller screen looks better,as both screens have the same amount of pixels. It's not a matter of outperforming,it's a matter of resolution combined with screen size. As I said before,if gaming is your main concern,you bought the wrong computer. An Alienware desktop with 4K monitor is not much more expensive than a basic MacBook Pro,and if you add some money for the oculus rift goggles and a set of high quality headphones,you will get a gaming experience that's almost real.