Well the Snapdragon 800 surely capable of 4k and 60/120 fps workload. My Note 3 has these features. But yes the camera need to support this too. And on the Note 3 it was so so... 1080p 60fps was good but.... no optical image stabilisation. Slowmotion recording was horrible, resolution fropped to something like vga, it was a pixel counting fest.
My reason i jumped ship on using android for 4 years and must say, the lumia 930 does not dissapoint me at all. wonderful os to work with.