Clarke might also suffer a bit because Australia don't play the weaker sides so much. Of his 79 Tests Clarke has played Bangladesh just twice, he didn't do too well at that. He hasn't played Zimbabwe and only seven Tests against West Indies. He has played the kiwis 11 times, averages 58.79.
And he's played England in 20 Tests (1/4 of his career tally), they might not have always been that strong, but they are better than average and not a team you'd want to play that often if seeking a 50+ average
And he's played England in 20 Tests (1/4 of his career tally), they might not have always been that strong, but they are better than average and not a team you'd want to play that often if seeking a 50+ average