I would say very different. Everything operates as a first person from an avatar, so you have to walk to you ship and move around as if it was real. Then you have the ship physics which feel much different to me and more how I remember Elite II, but at lower velocities.
The main thing is the social interaction, I had three people on my Freelancer, one flying, one in the turret and me sitting in the co-pilot seat just watching from the 3rd person view, but all the time I can move around the ship without it affecting what is going on (unless I cut power from one of the consoles).