Goughy
Hall of Fame Member
The difference is that different conditions suit bowlers of different pace. A 75 mph bowler would want a different type of wicket to prosper than a 95 mph bowler.I think that list just shows the futility of trying to separate "medium" pacers from "fast" pacers.
Seam-up is seam-up, and those bowling at 80mph can easily be as good and better than those bowling at 90.
To illustrate, Larwood always stated Bowes was too slow to be effective in Aus and needed the softer greener wickets of England whereas he wanted a track as hard as possible.
They are as seperate as any bowling type can be.