You mean the GG Shinobi games weren't the best portable action games around? News to me.
The Shining Force, Sonic, and Mickey series' weren't high quality?
And the Aleste games weren't the best Japanese shooters on portable?
The GG didn't have quite as many games I liked as the Lynx or GB but it deserves credit for the stuff it did well. I don't think game quality was an issue for it.