Beg to differ all you want.
That video actually is what made me buy my 4.56R gears.
And now that I've owned both stock and these, I can speak from experience.
I can not pull on a stock S2000 with similar mods and an equal driver, at all.
It feels different than before for sure, but is it any faster? I don't think so.
It's impossible to know the details of the video you linked, but oh well.
Buy a set and see for yourself.
I'm not smashing the gears... They're great, but they only really shine in auto-X, not in a strait line (especially @ higher speeds).