Even if it was massive enough, if they can keep people sticking to the ground in a tiny ship they can surely counteract the gravity of a space station.
Also, most of their spaceships have wings. We're thinking about this way too hard.
Well, yeah, but we've also seen the ones that look like a hamburger patty fly through the atmosphere (and, in fact, outmaneouver the winged ones). Clearly that's not what they're for.
The hamburger was originally a cargo ship, the one we see is special in that it has a bunch of very expensive, very powerful engines added.
It's no wonder that a street racer can outpace army jeeps. Also, they couldn't outpace TIE fighters in Ep.IV, which are known for being very fast for a coffee table.