let's go back to basics here. the intended usage of smartphones is to expedite communication and maybe enhance on the go productivity (lets you reply emails on a small compact machine, open office documents on the fly). if someone is multimedia centric they would more often than not bring a tablet or power bank around.
the mate 9 is targeted towards more business centric people and the gpu shouldn't be a selling point or even be a deal breaker if you are huawei's target audience. In my humble opinion, the mate 9 is far from perfect, however, in my eyes, it's the perfect phone FOR MY USAGE. and about the gaming experience how about you take the pov of an actual owner and act more like an end user instead. idc about temps neither do I care about the power consumption per frame or whatever - the phone runs games smoothly, lasts long and doesn't get warm. and that's what matters, not the crunched out numbers lmao.
I'm pretty sure, corroborating with other s7e users in this thread, that the overall battery life of the mate 9 is superior as compared to the s7e. and our supercharge is definitely superior than the quick charge on the s7e.
I just don't get why got so many good points of the mate 9 to focus on must purposely pick on its one bad point and act like it's the end of the world. let's just take a step back and appreciate huawei's effort to create such a well rounded device.
tl;dr if the gpu performance is a deal breaker for you, you aren't even the intended audience for this phone.