A 2003 automatic V6 coupe does 0-60mph in 7.0 compared to 7.5 or so in the 5 speed I4 Accord. With a proper launch in both cars the 5 speed will not have a lead. I have raced a friends Nissan Sentra SER Spec V tons of times and with a perfect launch he stays dead even with me through first gear and then I start to pull and get him by about 3-4 cars in the quarter. The 2003 5 speed 4 cylinder Accords are not as quick as the Spec V's so if anything they will be trailing the auto V6 coupes even out of the hole.