India's lace bowlers are the best in Asian conditions. India's pace attack will crush any opposition team in India. Their r3cord suggests so. Even umesh who is the worst one of our bowlers has an average of under 22 at home.
india don't only rely on spinners at home. I fact since 2014 india rely on pace bowlers to so the damage.
What people have not learnt is (especially in PP) that there is an ART to fast bowling in Indian Conditions which only Indian fast bowlers have mastered and "they" are the actual difference between the touring sides & the Indian side, and not necessarily the "turning tracks" or "flat tracks" (accusing us based on convenience! In fact pure turning tracks have backfired us at times, just like how pure movement-tracks backfired England and gave us the lone test victory last tour! Hence home sides don't go to the extreme of their strength, they actually want to play around with a bit of "range" of their strength so that opponents don't exploit!) It is not the spinners or home-track bully batsmen who are necessary for our domination (in fact we have a weakish batting lineup currently and that's why we are failing overseas, but our other departments are making us stronger!)
In my opinion these are the reasons for our complete home domination in tests:
1) Pace Bowling (absolute fact which even experts have not figured out yet! Strangely)
2) 5 bowler bold strategy - this ensures that opponents can never draw the match
3) Depth in batting (this has helped us so many times, even when opponents have scored like 400+ batting first, our batting depth has surpassed it & reached like 600 and have demoralized the opponents! Jadeja, Ashwin, etc have done this damage!)
4) Spinners come last - They are smart! But they are immensely helped by the above 3 factors! Otherwise even they would have required to bowl like 50 overs in an innings and opposition batsmen blocking them off! But since the pacers also pick wickets, it helps them & they complement them! But for that to happen, the added attribute of batting & allowing to pick 5 bowlers have helped immensely! Our previous spinners (like Kumble, Harbhajan, Maninder, Hirwani, Rajesh Chouhan, etc) were not giving this confidence to add a 3rd seamer/5th bowler! The presence of 3rd seamer (and 3rd spinner or too spin-friendly tracks with 2 seamers) has made all the difference! It has helped them to bowl with same intensity & accuracy throughout the day...
So you can see that its a total team work & there is certain concrete strength jelling their! But its unfortunate that the same thing is not happening overseas... Sometimes I wonder why we don't go with same plan (like 5 bowlers) even overseas, they may lose some games badly, but now it seems like they still lose the test match & our team is not interested in draws and we don't get any flat pitches either! So why not go bold, this at least gives us a chance to win some matches and we can improve on that! Instead of 2-0, 4-0 whitewashes, we may see like 3-1, 3-2, 1-1 and can improve...
But once we get back the weakish link in the current team (Batting, which was strangely our main & probably the only strength a decade or two back!) then we can imagine the even more improvement & an answer to the question marks being put across our overseas record!