Stokes career average with bowl is 32, not 29. I don't agree that he had a great pace attack for all his career. There was Anderson- Broad who were formidable duo in England but outside England, Stokes hardly had a great bowling attack and when Stokes was fit and bowling, he would still hardly be averaging 32 with bowl.and WPM is only a measure of the preassure one shoulders?
Stokes his whole career has been comfortably inferior to English pacers, he exclusively is the fifth bowler or the fourth bowler, he doesn't need to bowl himself into dust when the other English pacers do their job pretty well.
Dev is obviously levels above Stokes as a pacer, but the point is WPM is impacted by things you can't control and is an even less accurate measure of a player's ability than averages, Yeah Stokes doesn't need to bowl much most of the time, but when he gets the ball he's a 29 a piece bowler which is good enough for an AR
WPM is not the only metric, averages are also important and so are away performances and alien conditions performance. Let's take a case for Jadeja, he is part of an invincible bowling attack at home but has still managed to pick 295 wickets in 72 tests. If you are an excellent bowler, you will certainly do more than just pick 2 WPM or even lesser.
Stokes with bowl is restricting himself to Kallis the bowler level. Kallis averages 55 with bat but Stokes doesn't even average 40 with bat which I believe he needs to be rated at the level of Cook and KP, both of them are below Root who is the best England player in this millennium though.