There's no way an Accord V6 does 60 in 7.5 stock. My sister just replaced a '97 Prelude SH with a 2001 Accord EX V6 and there is no way that they are even in the same speed class. The Prelude did 60 in just under 7 seconds stock btw..
The Accord is torquey off the line, but I would be willing to bet that the Camaro would beat it because the 3.8L V-6 is a pretty nice engine.
Answer me this.. I know that the Accord V6 is an auto, but how about the Camaro? Stick or auto? That could make the difference right there. Also, you mention that he got bigger wheels and tires. I trust that he kept the aspect ratio close to stock? If the overall diameter of the wheels are smaller than stock, he will be quicker to 60, but if they are bigger than stock, he would be slower to 60 and have a higher top speed.
Sal