Your references do not apply here as they do not compare the iMac to the Mac Pro.
Remove the radiator from your car, run it full throttle and let me know how far you get.
Geekbench shows the Mac Pro as a shade faster than the iMac. So telling me to check my facts and that the iMac "crushes" the Mac Pro = you are wrong.
Fastest Single CPU Mac Pro you can get:
http://browser.primatelabs.com/geekbench2/1526987
Fastest iMac I do not recommend you get:
http://browser.primatelabs.com/geekbench2/1532374
If you opted for a dual CPU Mac Pro, then it is significantly faster then iMac.
iMac is perhaps a better value if you like the screen you are stuck with...I will give you that. But it does not "crush" the Mac Pro.
B