the top deck is lower on the cyclone but unless you are mounting all your electronics on the top deck I don't see it making that much of a difference. The majority of the weight (batteries, motor, electronics) are the same on both cars. I just do not see how the CG onthe pro 4 can be "much much higher" to quote floodo1
Also as already said, even if it is slightly lower, I doubt very many of us could tell.