There are people that use stats more than me. I don't base my arguments purely on stats either. Stats are used to back up an argument. Vettori isn't a particularly good Test bowler, and I've noticed that from watching him, and then the stats back it up. Sure he creates pressure for the other bowlers, but purely creating pressure isn't enough to make him a great Test bowler. I think Vettori's a good bowler, but he's not anywhere near as good a Test bowler as people seem to make out. Superb ODi and T20 bowler, but if a genuinely good, wicket-taking spinner came along, Vettori wouldn't keep his place on his bowling alone.
I'm right about Botha as well, and the stats actually do back me up. He's had a very good last 12 months, he looks a good bowler and he gets wickets. Don't see how anyone can dismiss him as an ODi bowler tbh; not if they've actually watched him anyway.