Eh transbrake vs 6 speed is pretty fair, both can run up rpm to launch...if you have to footbrake your converter really limits you...if its a dig on the street id opt outta using my trans brake just my
If he is using street tires yeah its fine but a combo of trans brake and good stall converter can launch an Automatic in a heart beat.
I would think the Vette 1st and 2nd gear almost don't exist a lot of quick shifting and working the clutch to grab.