Southee is a swing bowler. The methods of his wicket-taking in recent times have been through the air, not off the seam. In the latest Test, we scored 412 before Southee took his 5-for. In India, prior to his seven-for, we managed 360 odd and runs weren't that hard to come by. So I'd challenge you to belittle his achievements by saying they were on green seamers. Colombo in particular was a road. Not a Perth road, but a road.If these pitches were so flat the ball wouldn't be doing so much. I am willing to bet the pitches NZ produced for SA last year were flatter than this. They certainly couldn't make the ball do so much in that series.
He's a completely different bowler than the one that played SA last summer. Sure, he'll find bigger tests in all meanings of the word over the next six months but those who have watched his career closely can see that he is up to it, and that his form over the last six months suggest he is a genuine world-class bowler.