I tried to replicate this one. My overriding impression was that it was well over-spiced, but maybe I was using a thinner base / less base than others who've tried this and liked it. I've noticed that the amount of spicing added to a dish needs to be in proportion with the bulk of base sauce (i.e. 2 ladles of a thin base is a lot less "bulk" than 3 ladles of a thicker base. ). I prefer to work with a thinner base which forces you to cook the curry longer.
Anyway, Mr Naga, mix powder, garam masala and tandoori masala seemed like a lot of spicing to add to a single portion curry and so it proved to be when I tasted it.