I dont know if that post was directed at me, or in general, but dont worry about the statistical stuff. I find that stuff interesting in portions, but an extended discussion in statistical terms (which is common on CW) bores me senseless, and as I have said before, I have better things to do with my time.
I just dont know if it can be (perhaps) simplistically broken down into Warne won more matches than McGrath based on 4 fers and 5 fers, when it is more likely a combination of the two (or other bowlers) bowling that may have played the predominant role in Australia winning so many of the matches they did in the 90s and 2000s. Certainly, Warne bowls a lot in wins, 47 overs, but McGrath, especially for a pacer, is not all that far behind with 40 overs. I say this especially in light of your comments about Murali vs Clark. I dont think Clark close to the bowler Murali is, or to be more precise, has been (he has been in decline since 2006/2007) but the fact that Clark has been able to be more of a match winning bowler is also due to a host of other circumstances outside his control as a bowler, for example, the strength of his batting side and the quality of his bowling support. Murali, for all his gifts, has only figured in 51 wins over the course of his career, only 17 of these have been overseas (and 7 of these are comprised of wins against Bang and Zim). The most obvious reasons for these are the puacity of his bowling support overseas, and the generally poor performance of SL batsmen on overseas tracks which tended to lead to less runs, and less innings, and less innings bowling time overall (Hadlee may be another similar example).
It seems to me then that your criteria might have an inbuilt bias towards match winning bowlers in match winning teams.
Btw, the McGrath and Warne stats take into account matches they played together and did not play together. I dont know if further paring of these stats is totally relevant.