could be all about wether each car can put the power down. traction will be the factor. your rst is a seriously powerful car given the low weight, i dont know what it weighs compared to the cebera. hp wise i think it will be quite close considering hot hatch vs supercar. just do it for a small amount of money for the craic. do NOT do a tacky hollywood car movie type ''winner takes keys'' style bet!! lol i hope your rst kicks arse, purely coz the gym owner is probably a competitive, borderline arrogant/showoff. fast fords ftw