The McLaren F1 is periodically owned in JGTC, so how can it be so dominant? It should be able to beat the EB110 however.
And for the Veyron, like I said, it's not even out yet, so how can you make a comparison? On paper, the Veyron is running about 300-400 more hp (depending on US or Euro specs) and maybe 400-500 more lbs of torque. Also, it's using small turbochargers, and four of them, so lag "inherently" shouldn't be a problem.