Just had a look on the Canon site
650D has a better processor than the 60D, a higher ISO rating, more shooting mode options, better metering
60D has the extra screen, 0.5mp more resolution, higher battery capacity, higher possible shutter speed 1/8000th agains the 650s 1/4000th (I can't ever remember going over about 1/800th) and a higher flash synch speed of 1/250th against the 650s 1/200th
650D is stainless steel and polycarbonate construction where the 60D is aluminium and polycarbonate
Both have virtually identical (650 - 5, 60 - 5.3) frame per second rates but the 60 has a bigger buffer so can shoot nearly 3 times the 650s 22 shots before the buffer is full. (Who shoots 22 frames in one go? not many people....)
Of all that lot the only thing that would be any use to me would be the higher flash synch of the 60D. Other than the 650 is, in many ways, the better camera......
Obviously different people need different things, but I can't see any point lugging around a camera thats nearly 1/2lb heavier and costs £100 more for a little screen and a couple of other bits and bobs......