Why Wasim Akram thinks Malcolm Marshall was the best fast bowler?

WASIM AKRAM: 🟦"A lot of people ask me who was the best bowler I ever saw. Imran was great, no doubt, very hardworking and shrewd. Dennis Lillee I never really saw, but people tell you obviously about how good he was. But when I rate a bowler, I look at how he did around the world, on different pitches in England, the subcontinent and Australia, and Malcolm Marshall, I feel, was the best of the lot."🟦

That should put to rest a lot of doubts.