That sounds very minor to make it gain the 'suck' category. I'd say the worst part about Gradius III was it's lag in the levels, like in the second half of the third level.
it doesn't work on the konami games I play
EGM is wrong. It doesn't work on Bucky O'Hare, Monster in my Pocket, and Zen: Intergalactic Ninja, just to name a few.