littlebabyjesus
one of Maxwell's demons
But that side of stats is pointless in that it doesn't tell you who you should pick for the team or whether that person is doing well. Hayden did well for Aus, Fleming did well for NZ. One averaged 50, the other 40. Comparisons across teams or eras are purely of academic interest – v. good eg would be Kaheer Khan: his low-30s bowling average shows that he's a very good bowler because he plays half his matches in India. If he were South African, that average would be far less impressive.