From my research, it isn't even a fair comparison...Deere all the way.
Deere delivers much more weight (long-term brawn and less ballast to buy), a 12x12 transmission with a wet clutch, greater hydraulic flow, a bigger fuel tank, and PLANETARY final drives. On the engine side, the Deere has a significantly larger engine and one whose basic architecture has been in service for nearly 30 years. On top of all that you have a Deere cab...I haven't been in one that I like better.
I prefer the 563 Deere loader with mechanical self leveling due to its mechanical nature and not a hydraulic valve to do the leveling.
Drive and buy what you like, but I'd go with the John Deere between those two.