yeah you are correct in pointing out that the bats sold in India by all the big guys are not the same top quality as we get in the UK or ANZ or SA. The problem is that the willow they have to sue for the Indian conditions has to be very very robust and hard due to the quality of balls used, nature of the pitches and the weather conditions.
Also in India everyone was the white-est bat, so may companies bleach their willow.
I have never bought a bat off the shelf for the past 25 years since I started playing leagues in Delhi and got to know some of the bat manufacturers.
The only bat that I ever bough off the shelf was a MRF Genius LE which I had to buy during a away tour as my kit did not arrive. The bat was a exception to the above and turned out to be a belter. But this is rare and possible with the higher end contract made bats.
The kookaburra or Adidas or Puma bats that you get in India are no where near to the ones we see in the UK.
Its not that the batmakers in India cannot make different shapes. SS, SG, BAS make bats for some of the top brands in the market. I know that KPs bats till last season were made in India, Matt Hayden got bats made in India during the last Ind-Aus series. I know for sure about 14 international pros (not Indians) who get their bats made from SG, SS and BAS.
Bradbury bat were/are made in India also.
I find SG to have some very different profiles and shapes.