The RS Venture TF rear suspension has shorter, stiffer springs when compared to the RS Venture's ProComfort.
I forget the name of the TF's rear suspension but it is quite different from the regular RS Venture's skid. I have ridden both and the RS Venture 144" ProComfort skid does ride better. If you are a heavy pair, the TF's stiffer rear skid can certainly come in handy.
Is there anything in particular you wanted to know about the differences in the two skids?
-JS