Maybe so, but we have not witnessed him reach that speed in years. We do know that.
And I've heard all the excuses for why Zeke hasn't been able to get into the open field to demonstrate his top end speed to include the offensive line, the play calling, the defense stacking the box, safeties taking good angles, Dak sucsk, etc. but I look at other RBs around the league hitting big plays with the same types of limitations. So despite lack of objective data proofing Zeke is just as fast and despite many people's eyeball test he is slower we are supposed to just take it on faith that he hasn't lost a step?