I couldn't care less how many wickets they've taken. All that means is they've played more games and bowled more overs than some bowlers. Given an
equal footing, a large number of the best seam-bowlers will do far better on a game-by-game basis.
You vastly underestimate the calibre of those four bowlers. Every single one of them was as deadly with old ball as new, and lost very little by bowling on non-greentop pitches. All were exceptionally capable as both strike (short spell) and stock (long spell) bowlers.
Utterly laughable, really, to suggest four seam-bowlers from the very top drawer (or indeed a good few of those quite a bit further down the list) would require absolute greentops to be effective.
The best players of right-arm pace are the best players. Full-stop. Same way the best players of left-arm wristspin are the best players.
You don't get to the very top of the game by being weak against one angle of attack or one speed of bowling.
Aside from the fact that the original stipulation was that 90 overs will be completed however long it takes - it's really not so difficult as you seem to think to bowl 15 overs per hour. None of the bowlers had extraordinarily long run-ups, even Donald, and they were all incredibly fit and did not need to constantly take breathers.
I don't care about balance, I care about quality.