whose your 3 then?
Kallis is up there
Great allrounder has to make the team for either batting or bowling and wim matches with either, Kallis never bowled enough to be a serious bowling proposition. Probably the best batsman who could bowl, but if he's an all-round great then Akram or Shaun Pollock are too, for example.
Only 3 genuines who had decent length careers and enough success to be considered great - Sobers, Botham, Khan. All would still have got picked if they miraculously lost their ability to either bat or bowl overnight.