Every console should be allowed a few duds. Of course, given only five titles to claim as its own, the SuperGrafx stood a better chance of hosting a library of perfection than most other systems. Indeed, after the first four SGX exclusives I'd played ranged from pretty good to phenomenal with nary a clunker in sight, a five-for-five showing seemed a realistic possibility. But then Battle Ace came along and annihilated that prospect.
BA is quite reminiscent of After Burner II (which I am admittedly not a big fan of) with its straightforward, repetitious shoot-the-enemies, dodge-the-missiles gameplay. But AB2 features a superior score and plays faster (and better if, like me, you prefer a behind-the-jet view to this inside-the-cockpit stuff).