Does sperm in pre-ejaculate lives less than sperm in ejaculatory fluid?

Nobody knows: Nobody knows, as we don't do research on pre-ejaculate (how would you collect it from 100 guys). Also, it doesn't matter, because life's rules don't change... meaning a couple would do a home pregnancy test if worried anyway (do it 3 weeks after sexual activity). In general, we think about sperm getting to an egg only if the penis was inside the vagina, without contraception of some kind.