The reason the averages were lower in the 80's were that the bowlers were better. Lillee, Marshall, Holding, Ambrose, Hadlee, Imran, the 90's like wise. Donald, Pollock, Walsh, Mcgrath.
Marshall is renowned for bowling on dead tracks in India, spinners track in Australia, prepared to blunt the W.I attack and he flourished.
The reason I like Malcolm has nothing to do with where he is from, as a follower of cricket and reading top 5's ect all dominated by batsmen, I wanted to find a bowler who belonged in that crowd, and Marshall was tthe one I found and guess what second was Mcgrath. But because of his pace and agression, and his dominance everywhere Marshall to me was number one.
Also a huge fan of Gilchrist and from I have read and saw on line Hutton, I dont show bias based on country.