It’s not comparable. Nintendo must have spent millions on developing the Game Boy, meanwhile retro handheld is a hobby project someone did over the quarter. Ever try to port and run an RTOS on those ARM chips? And port a mainstream Game Boy emulator to it? “What do you mean you have to have MMU support?Just work, damnit?”
It doesn’t work like that.
Sir, I sincerely think you missed the point. Somebody, that nobody who only knows just enough programming, spent three months (at most) in his basement, putting together a embedded Linux and integrated emulators in a portable computer, cannot be compared with a video game company’s officially released commercial product. The money, the time, the effort, the equipment, the testing, not one is in the same magnitude.
Sponsor a group of enthusiasts who have the right skill to live for a year, they can replicate Game Boy with modern hardware too, 100% identical or even better. Consumers like us who only paid $20 for the retro handheld emulator? We don’t have a right to complain about the performance and quality.