IMO a half second in those time ranges isnt that much faster. now a half second in the 9-10 second range is quite a bit faster.
and my clutch wasnt slipping but i was worried about launching it too hard. and considering one of the dampner springs it blew up shortly after im glad i didnt launch it hard.
look at it this way, i had ~125WHP in the lighter car. the SE has ~136WHP in the heavier car. thats only a difference of 11WHP but the zetec is probably a good 100+ lbs lighter. its a damn good race either way.