It could simply be that out of blocks you're being powerful, developing momentum, and overcoming intertia…which will help you run further for longer distances than 10m (ie. 100m). Where as the standing start, you probably hit top frequency as soon as possible, which gets you to 10m faster, but would cost you down the road
Ok if that is true than my momentum will make-up for the .10 of a second difference does that .10 not mean anything