I've never actually seen the original Aliens...I liked Prometheus though, and I'm probably going to watch Aliens sometime this year.
However, I was kinda creeped out at the end when , so if that wasn't much compared to the next Alien movie, I may have to pass.
First of all it was a black xenomorph which burst out of the engineer's chest. Also if you ever watch any alien movies, the aliens look totally different. It all depends on their hosts, like when an alien burst out of an impregnated dog, it walked on all fours and was more scorpian like. So yeah, the original aliens look a lot different than the one from the engineer.
One man is judged not by his strength but by his intellectual strength.