not much difference really, the race was the first mass produced electronic grip for the autococker (to my knowledge) and is made in holland (i think). the E-blade is made by planet in manchester.
they both perform pretty much the same, the race has a standard 45 grip frame allowing you to change grips whereas the E-blade only has the factory grips on it and the size and style doesn't correspond to any normal grips.
the race grip doesn't have an LED readout whereas the E-blade does.
its tit for tat basically!!
hope that's helped a bit
jack