Inconsistency with Space Jockey in Alien/last living Engineer in Prometheus?

So in 'Alien', when Kane, Lambert, and Captain Dallas went to investigate the ship they found the space jockey sitting on that pilot seat. In Prometheus, we see the last living engineer to sit in the same position as how the Nostromo crew in 'Alien' found him sitting, (shown in this pic: http://www.prometheus-movie.com/gallery/view/img/336 ) when he was trying to get the spaceship to Earth. But towards the end of Prometheus, that same engineer went after Shaw - which means he got up from that 'pilot' seat to come and attack Shaw only to be killed by the giant Facehugger type creature and therefore could not be sitting back in that pilot seat. Anyone else notice this?