This is only true if you keep the 21” front when and then only if you are trying to keep up with skilled riders (disclaimer I’m not the average rider). Had a dual sport that I made into a super moto with ultra stick rubber. Would blow away a GSXR/Ducati/R1/R6 on HWY 9 all the windy sections. Those bikes could out accelerate me on straights but they all held me up in corners.