Yeah, the graphics are slightly better, but just about everything else is made worse. Gone is the floatiness of space, forcing you to let off your thrusters early or else ram into a rock. Gone is the satisfaction of mindlessly shooting the space stuff, replaced with a need for munitions and fuel. Gone entirely are enemy space crafts, and the risk of using Hyperdrive. A mouse and spacebar setup can't really compare to the classic arcade booth's controls.
Oh, and the audio. The original Asteroids opted for BARELY any sounds, which helped exemplify the idea of "Hey! THIS IS SPACE!" All you heard were little beeps, bloops, the firing of your laser, the roar of your thrusters, the whistle of other ships, and explosions when you failed. Here, there's low-quality music, and a sound for just about EVERYTHING, which detracts from the 'emptiness' that Asteroids had, and this was made in 2012, mind you.
If you want to play Asteroids, nothing beats the original arcade version, so if there's one nearby, happy hunting. Or, maybe there's a fairly faithful console version out there. So be it, as long as you don't refer to THIS game as your introduction to the game Asteroids.