The Indian bowling side that got here consisted of Kumble, Harbhajan, Zaheer/RP/Irfan, Ishant/Munaf/Sreesanth. Kumble's been retired just over a year to the day, but is undeniably part of a bulk of this journey (as was Ganguly).
It has no superstars and is clearly second by a couple of miles to McGrath, Warne & associates (and no shame in that).
But it isn't so self-apparent to me that they're too much behind Lee-Clark-Johnson-any Aussie who can turn his wrists or fingers, or Steyn-Ntini-Kallis-Morkel-Harris. For one, they have more variety (and not just for the sake of it) and are able to bring different weapons to bear on just about any sort of condition, where a more star studded unit of faster bowlers may seem unable to do much if conditions are not suiting them. It shows, India's won a test almost every where it played in 5 years (except just once).
Almost every one of these bowlers (and certainly Kumble, Harbhajan, Zaheer, Sreesanth) has run through the opposition and they've taken turns doing so (recent Sri Lanka series was a good example of it).
On the flip side, not having superstars has the advantage of a better shot at filling empty shoes. Example one can hope for Mishra to at least approximate some of Kumble's success (bowling differently of course) and team up with Harbhajan in a complementary manner. For a while India toyed with (in ODIs) pairing Chawla/Powar and tacking them on to a lfm/rfm (was it Pathan/RP and Sree/Munaf, dont recall exactly).
This is a strength of recent Indian cricket teams, and a more durable one as it is not based on 2 or 3 specific individuals.
Only SL appears to be capable of a similar "formula", and among the top teams SA have had the hardest time of growing different types of bowlers all of whom reach a certain standard on their own (whether it be great or very good or merely good enough).