Kurek had many other coaches that knew him personnaly as well and didn't change his position, but like i said it is all about team's need and coach desires, some need good receptions, others need good attackers and so on, Kazan for exemple played boring game, without good receivers and won everything.
Statistic don't say much to me in a volleyball game, and i followed him not just in polish team but in russian and italian superleague...