I tend to agree with subshakerz a lot but this is a weird take.
Steyn is the best non-Asian pace bowler to tour Asia. Period. For all his low economy and misery style bowling, someone like McGrath never ran though the sides in Asia, while Steyn regularly did. This alone counts for something.
Allow me to make my case.
Steyn was one of my favorites when he was playing, and I would put him in the top 10 ever, and better than Donald also.
But compared with the cream of the crop given here (Hadlee, Marshall, McGrath and Ambrose), Steyn lacked the consistency, even in his prime.
Yes, he had the best strikerate of all of them, but conversely had the highest econ rate. Which means when he wasn't getting wickets, he was getting tonked around.
I saw this happen to Steyn throughout his career. For one test in the series he would be godly, then the rest of the series rather pedestrian. After his fantastic 10-fer in Kanpur, the next test he was taken to the cleaners by Sehwag and Tendulkar. Before his terrific Perth performance in 2012, he was thrashed by Clarke and co prior to the series. There are many other examples. He was rarely consistently great throughout a series.
I think for a best ever ATG bowler, and especially as a lead bowler of the attack, you need to be able to apply pressure and sustain quality even when you are not taking wickets. So I would opt for an ATG bowler who is more miserly since at least he can prevent the opposition from dominating, even if he needs to take slightly longer to take a wicket.
And I dont know what you guys mean about Steyn running through sides, its not like the other four didn't do that as well, including in Asia?
And yes, Steyn was the best non-Asian pacer in Asia ever, but conversely his record in England and Australia is comparatively moderate.