One thing I always found interesting, while we're trotting out country-by-country stats, is that Warne's away average and his record in Sri Lanka are both better than Murali's, when you take away the minnows. This is despite presumably playing better players of spin there who are more familiar with the conditions most of the time - Sri Lankan batsmen.
Warne in Sri Lanka - 9 tests, 48 wickets @ 20.46
Murali in Sri Lanka excluding Bang/Zim - 50 tests, 311 wickets @ 22.13
Murali away excluding Bang/Zim - 38 tests, 209 wickets @ 26.11
Warne away excluding Bang/Zim - 73 tests, 372 wickets @ 24.56
One might assume, if you looked up the country-by-country stats, that Warne had better records IN most of these countries, while Murali has better records overall against them because he plays them a hell of a lot in Sri Lanka, where many opposing batsmen struggle to come to terms with the conditions, and both Warne and Murali thrive. In fact, he has played 61 of his 108 tests at home.