Par4QC Maybe I missed it somewhere, but what shafts were you using in those drivers? I'm a firm believer in the shaft & flex being #1.
460SZ- Accuflex Icon Lite Reg.45 Gram
Wishon 911 THI -SMT EON Phantom 45 Gram
Amp Cell- FGS Vision 57 Gram
Cobra L4V- Stock Shaft
SMT Encore - Cobra pull from 460 SZ
Wishon 959 OL UST V2 55
All are untipped and Regular flex
Not really a good test. With someone with a much higher swing speed there probably would have been quite a difference I think.