GTX 1050 Ti for mobile has higher core clocks than desktop part. MUCH higher. Boost clock for desktop is 1392 MHz, and power consumption for that GPU peaks at 75W with average 67W of power. Mobile version has base clock of 1.5 GHz, and boost clock of 1.62 GHz.Probably more like 40-50W. The 965M already has the TDP of 60-70W, there is no chance that Pascal is warmer than that. But all in all, I don't think that the mobile 1050 will be substantially faster than the Pro 460. Maybe few percent here and there, at best. And one also shouldn't forget that AMD cards perform really well with next-gen APIs such as DX12, Vulkan (and most likely Metal), so the AMD choice might have been indeed the best one.
How will it affect power consumption do you think?