OK - I'll play!
Tormek motor 200W, Jet 160W (doesn't say if continuously-rated).
Speed of Tormek 90RPM, Jet 90 - 150RPM via variable speed switch. Width of Tormek stone 50mm, Jet 63.5mm.
Tormek L 270 x W250 x H325mm, Jet L 406 x W305 x H330mm (measured from different places, I'd guess?).
Tormek weight 14.5Kg net, Jet 10.5Kg.
The are some differences in appearance of the bevel gauge and setting tool and the Jet jigs look a lot cheaper. The truing tool is almost identical to the tormek version. I quite like the idea of an under-machine drawer unit for the Jet (might have to make one of those!).
As Scrit pointed out, there are other clones available, especially from Sheppach. I think I'd still stick with the original if I was starting over.
Ray.