Dont know what Ganguly has got against Ashwin in recent times. Even in the 2nd innings at Sydney when Ashwin was scoring so well, Ganguly in the commentary box repeatedly brought up Ashwin's so-called short ball weakness (when in fact Ashwin looked atleast 5x better against the short ball than what Ganguly had looked against it when he started playing for India) and was almost egging Aussie fast bowlers to unsettle Ashwin with the short ball. It seemed like he didn't want Ashwin to score those runs that he did.
Two test matches in Australia and Ganguly immediately wants Ashwin out of the next test. And when you got to think of bringing in a 4th pacer, this guy wants to replace a spinner with another spinner. Ashwin needs to be properly backed and given chances to do well. His career has had a fantastic start with 22 wickets in 3 tests. We knew that spinners wont find too much purchase in Australian wickets and so putting the first two tests bowling performance against Ashwin is not fair. Ashwin looks the brighter future than Ojha. He is a good bat too which helps. When his batting has done well at a time when most others are failing, we need to keep Ashwin.
Ashwin is in the team for Bowling, anything which he gets from bat is bonus.
To be frank, ashwin has just bowl below par till now in the series. Many experts and fans Criticize Harbhajan for not taking wickets in Overseas condition and see Ashwin has not done anything better than Harbhajan till now in Overseas test matches. (avg of 50-60 +)
in all 3 inninings fast bowlers have made early breakthrough and but lack of support from Ashwin has let Australians to get away even after losing 3 wickets for 50-60. Forget about taking wickets, he is licking runs at 3.5-4 rpo. I know conditions are not suitable for spin, but in past we won test matches in this country by playing 3-4 spinner in a team.
When Ganguly was captain he himself didn't played a Left arm spinner Murali Karthik as he wanted Harbhajan in the side. Ganguly is huge supporter of Harbhajan and he will not miss a chance to criticize Ashwin.
Ojha has made his name from FC matches, unlike Ashwin who came from t20. In T20 you can bowl flatter Trajectory but in Test matches if you start doing this then its very hard to take wickets. A left arm spinner is a attacking option if he is accurate. Australia is known for producing Leg spinner, similarly india is know for producing some great left arm spinner. (Bedi, Mahinder singh and few more) Ojha has all quality to become a great left arm spinner.
I am 100% sure ojha would have got chance ahead of Ashwin in next test two matches if Indian Top 7 would have batted according to their averages.
BTW, best bowling records in Australia by an Indian finger spinner is hold by a Left arm spin bowler.
for Perth Test Match indian should bring in Rohit for Kohli and Mithun for Ashwin (if there is too much grass on the wicket).