Upload & Sell: Off
Easy choice here (fore me). Better sensor/IQ, more reliable AF, higher ISO capabilities, less (if not no) banding at ISO 6.400, better ooc jpegs, Usable pics up to ISO 25k and the center AF point sensitive to -3 EV. Additional wifi and GPS. MA at both zoom ends.
Better weight, size, build. All at a 10% higher price?
What you lose:
1/8000 (I never needed)
CF card (who really cares?)
joystick (stupid decission by Canon imo)
I love the 5D II. For me the best camera Canon manufactured in digital till last generation. But it is topped by 1D X, 5D III, 6D now.
And 6D sales start at nearly the actual 5D II price. This 200 € difference imo make the decission easy.