And Katya, that isn't 100% true! I have had WWW x WWW (well matched) + sven = PPP before - I think it is more about the random factor!
Like this RO I had a pretty good match, match rather well and used a sven and got an EEE filly - the only reason she is being kept is because she is 1 out of 10 colour so will be used. :)
her eyes widened "well i find pups to much responsablity" she said but looked up at the sky "but maybe two one boy and one girl" she said smiling but shook her head "but like i said too much work" she said