To be honest, and please don't anyone take this as an attack on anyone's efforts, those screenshots don't look much different than I got in .171.
Look at the saucer in the first screenshot - it's a white blob, there's no definition.
Black Widow shouldn't have those white dots, and the vector lines have lost definition and look blurred.
The tie fighter in Star Wars suffers in much the same way as the saucer in Asteroids.
I'm a strong believer in people enjoying these games in any way they like, but for me - based on the screenshots - the screenshots don't look like their arcade cousins. The beauty, for me, of Vector games was their clean appearance, this takes them a step away from that, imo.
Still, each to their own, and the only way to know is to try it on your own rig......