the ships are not identical. just very similar.
the one in prometheus looks more round to me aswel. the one in ALIEN is not as round.
the one in prometheus looks perhaps a bit more advanced and machine looking.
which would make sense with some of the other more Premium suggesting features.. such as those earns instead of eggs.
i am personally not that pleased with what appears to be the Jockey engineer. its kind of destroyed what i thought of the jockeys. i thought the Jockey was TRULY Alien. and i mean in a sense much more than just being a life form from outside earth. i mean very different. everything about the derelict in alien, the jockey, and the aliens themselves were all very different and alien.
in prometheus, the apparent engineer/jockey is not that far from human looking at all. and to be honest, the whole jockey suite concept really detracts from the original impression left in ALIEN.
it would be like suggesting the ALIEN in alien, was a suite. would that make the original alien as much of a fascination as it originally was? of course not.
the ship in prometheus definitely isn't quite as alien/gigerish, natural/bio organic looking. it looks alot more machined. which further detracts from the original ALIEN impression. the original organic look was alot more ALIEN to imagine as being a functional ship.
what was so succesfull in ALIEN was that Gigers designs and alien world was so different, so opposite in comparison, to the industrial human like technologies and designs. including humans as humans. and gigers legendary ALIEN itself.
BASED on this trailer, i feel ridley has potentially failed. he has brought the ALIEN Jockey even CLOSER in similarity to humans, the figure/man in a suite! and the ship now looks closer to a machined type ship of metals and familiar ship technology.
ALIEN originally worked because everything worked and appeared, felt so UNfamiliar to humanity.
also.. from what i see, the jockey design doesnt match the original one closely at all.. and the original jockey doesnt suggest a suit to me. an example of difference was the original jockey's head was low into its own chest with high raised shoulders. this jockey engineer looks incredibly human in stature.
feeling disappointed so far but still excited to see what can be done with the story.