The only downfall I see with Sidearms on the Turbo is the fact that it's only One Player. It was cool on other stuff due to there being the option for Multiple players like the arcade, but still, a solid game and my favorite version of the game, although, isn't there a CD version of the PC Engine? I have never seen it, so don't know what the differences may be.
Cybercore may be considered Average, but I used to play that game so much when I was younger.
After taking some time to revisit the Shooters of late though, I realize how horrible I am at them now. I used to be able to breeze through Super Star Soldier. Now I can barely make it past the first level anymore. It's sad. I needs practice!