Yes the GC2/HMT combo is actually more accurate than Trackman at smash factor as the TM calculates the club head speed just as compression of the ball occurs (thus slowing down already. As the swing speed is slower than actual on the TM but ball speed is spot on accurate it gives falsely high smash. I've done this with both units concurrently and was getting smash of 1.52 with TM and 1.45 with gc2hmt although gh ball speeds were tnearlhbthe exact same.
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