some more info related to this:
a more careful view on this also showed that negative willpower will prolong the duration of CC-effects by ~20% (i actually read somewhere this is possible but forgot it soon as i found out most ccs only last for 1,5 sec or something like that now)
1,5 sec cc -> 1,8 sec cc
still not this great
4 sec cc -> 4,8 sec cc, better
interesting application: mage putting cowardice effect on group of players while psi in cc aspect using masscc, no or less immunity should happen