Here it is then as promised
Period: From 01 January 2011 onwards
Qualification: Minimum 30 Tests
(1) Opening batsmen
(2) Opening bowlers
(3) Spinner
Alistair Cook and David Warner
James Anderson and Dayle Steyn
Rangana Herath
Is everyone else in agreement? I'll wait a bit
Bada post stats or Ashwin vs herath
Top order wickets
Wickets win wins
Home vs away
I think Herath had more impact in the decade we're considering (30 five-wkt hauls in 69 Tests) while I believe Ashwin will be the better bowler overall in a couple of years if he already isn't. Herath couldn't do much damage in the early part of his career when he played with Murali. His away record in the decade is better than how it looks overall. He was carrying the attack single-handedly in some Tests when others weren't threatening to take wickets.
No point of waiting till someone does a 3-day analysis on this, because I will vote Herath if it comes to a tie. Let's move on.