I'm a bit late coming to this discussion, but I thought Tetsuya's was fantastic and, as much as an ultra-premium restaurant can be, well worth the money. It certainly was head and shoulders above any other restaurant I've been to in Sydney (including Rockpool, est., Level 41 etc). Everything was delicious, and what's more they pushed the boundaries a bit in taste and combinations and presentation.
Five times as nice as Chinta Ria? At least! (IMHO of course.)
Feebster, hope you had a great experience there (assuming you could get a booking).