But stats disagree with you. I had posted this stat before. It shows the bowling stats for spinners in India and UAE.
http://stats.espncricinfo.com/ci/en...8;spanval1=span;template=results;type=bowling
Avg in India - 32.7
Avg in UAE - 34.1
ER in India - 2.89
ER in UAE - 2.99
SR in India - 65
SR in UAE - 70
I have seen enough test in UAE and I've seen the ball spinning from day 2, sometimes day 1. And I have also seen many Indian pitches like Rajkot, Mohali, Dehradun, etc where the ball doesn't spin much.
Australians recently took 7 wickets with spin on a day 1 track in Abu Dhabi. In the Dubai test, Bilal Asif took 6 wickets on a day 2/3 track. So I don't why this myth has been created that UAE pitches don't spin till day 4.
If Ashwin is taking more wickets on day 1 then it's down to the difference in class between these 2 bowlers, not the pitch.
Ashwin also took a 4fer on day 1 in the Edgbaston test match recently. It's class. Not the pitch.