I think I have the Option video with this race. Taniguchi is not to happy about the result if I remember correctly, and to be honest, I sort of understand him.
The thing with Kazama, and D1 in general really, is that extreme angles and smoke gives a better score than good line and speed. Kazama is great to watch, and he's no doubt spectacular, however, I still think Taniguchi is the better driver. Just take a look at the final round from Tsukuba last year. Taniguchi was fantastic there, and I still haven't really seen Kazama that good.
He has definately been good this year, but it just doesn't look like he is in 100% control all the time. And he probably isn't either. Still he manages to keep the car on the track by making a lot of corrections, but that's not really what makes a good driver. Taniguchi will probably never be able to let go as much as Kazama, due to his racing background. By instinct he will always balance the car on the edge, but never let it go completely.