I don't know, while I can't speak for 720, Atari had some pretty decent games at the time. I think part of the problem was that, as I recall, Atari games on home consoles were mostly ports of Atari's arcade games. Some ports were better than others but they were never going to be as good as the originals and it is hard not to judge them against those. Atari also published games for home systems (mostly the NES and most were unlicensed) under the Tengen label. I remember enjoying Super Sprint, Vindicators, Gauntlet, R.B.I. Baseball, Rolling Thunder, Shinobi and Alien Syndrome among others. Of course these days you can play the arcade versions or arcade perfect ports of most or all of these.