I can't agree with that. Ian Holm, John Hurt, Tom Skerritt, Yaphet Kotto, Harry Dean Stanton versus erm Michael Biehn, Bill Paxton, some bloke from My Two Dads and a typical James Cameron token Latino girl soldier.
It's a great romp like Andy says but James Cameron versus Ridley Scott?
Concur with all that. I think those saying
Aliens is the better film are just nuts... and I've loved
Aliens since I was a kid!
Alien has much better acting and dialogue; a more oppressive atmosphere; utterly immersive, beautiful and truly innovative (unique for its time) art direction; far fewer silly moments, and a genuinely terrifying creature at its centre (again, unique for its time).
Aliens labours under this pretty dumbass impression that if one Xenomorph is scary, then hundreds of Xenomorphs plus a big-arsed Queen Xenomorph, versus a bunch of meathead Space Marines with massive guns, has got to be scarier... only it isn't. That said, there are loads of awesome bits in it, and Bishop is great.
I mostly enjoy
Aliens in the same way I enjoy Predator and Terminator 2, mostly.