So a guy who is amongst the top 3 pacers of all time can't even buy a wicket in the IPL
Who cares if he has a wonderful economy rate? He is a strike bowler; his job is to take wickets not to contain runs.
He is tied on wickets with Ishant Sharma and Dinda while having bowled more overs

and has less wickets than Perera, Kallis, Faulkner, Vinay Kumar, Johnson and Bravo, just to name the seamers.
His strike rate is not even amongst the top 50 bowlers this season and he has the 34th best average.
I know his intolerant fans are gonna pop up and say that judging a test great on his IPL performance is beyond ridiculous because it is a nothing league, but on the other hand you are quick to downplay players who do well in IPL because it is standard is very low. Well if its standard is that low, why is Dale "better than Wasim, Waqar, Donald, Lillee bla bla" Steyn so ineffective that trundlers like Vinay Kumar are ahead of him?
So he's completely mediocre in ODIs and T20s but brilliant in tests. How does that make him the best in the world? It makes him a test specialist. Nothing more.
He is easily the worst best fast bowler ever if you know what I'm trying to say.
He is considered the best today but he pales in comparison to the best bowlers of the preceding generations.
The likes of Wasim, Waqar, Lillee, Donald, Pollock, Holding, Roberts, Mcgrath, Richard Hadlee, Ambrose were brilliant in both Tests and ODIs and hence they all rank above him.
One can only imagine how devastating Waqar, Wasim, Mcgrath etc would have been in the IPL.
Steyn the stand out pacer of this generation simply cannot get into an all time Test XI yet let alone an alll time XI based on both formats.
That really shows he stands out more because of the glaring lack of quality of bowlers elsewhere rather than him being that good.
Steyn is more comparable to Walsh, another bowler who did really well in tests but was mediocre in ODIs and that is a level below the greats I mentioned beforehand.
I know ODI cricket may not matter to you but tell that to legends of the game who bowled their hearts out in a "meaningless format which know one cares about and is not important".
Pretty sure they'd be shedding tears in regret now.