"go see huayra vs vitesse SS youtube"
These are not nearly close competitors...
Also, I don't think Koenigsegg has any reliability issues, nor cannot be driven round corners (can't claim the same for Hennessey, SSC etc. though). Agera R will easily defeat Veyron at the track, and more likely at the top speed aspect too. In fact, the only aspect where Veyron SS dominates is 0-200 time, thanks to AWD. At higher speeds Agera overtakes.
Actually, Veyron combines everything, but it doesn't do any aspect "The Best".