Yes there are many variables yet IMO W10M does not utilize the hardware to the degree it should. Comparing the 950 to G4 highlights this and don't feel my comparison was too far out in left field, nor do I think I'm basing our experience off assumption either but rather on facts. Both devices are running 808s, have 418 GPUs, 3 gigs of ram, and same 1440 x 2560 resolution, then opening same or comparable apps. If one handles the processes better and feels more tuned then there is only one thing to conclude, it rises above... Yes we could use benchmark tools for testing but IMO the result don't always hold true, "real world" is the most telling.
And no, I don't think the 950 is a slouch but for what it is, it's not where it should be. We like it yet has left me a bit underwhelmed. Got to admit, I'm more impressed with the 650 when comparing dollar for dollar.