Exynos Note 4 gets it's graphical ass slapped by the 6 plus:
http://appleinsider.com/articles/14...r-graphics-performance-vs-apple-iphone-6-plus
In other words, the chips Samsung is choosing to use could theoretically match Apple's latest iPhones if they were not also driving tons of additional pixels that contribute little to no benefit to users. Think of it as a reasonably powerful engine installed into a monster truck with massive wheels it can barely turn.
Hopefully all the Android manufacturers turn back from 1440p and start putting processing power to better use (or save power and get phenomenal battery life).