Like others have said, it's no contest if we compare the PC Engine to the others here - I mean, it had bigger sprites and much better color than even the Mega Drive.
The US release of the PC Engine as the TurboGrafx-16 is a perfect example of trying to make a product seem more powerful by making it bigger and more expensive: The PC Engine was an adorable little console; the TG16 was made extra big with a lot of unnecessary plastic. It also required extra add-ons just for multiplayer and stereo sound (every region). But the system's fate was much different in Japan than the rest of the world. It would have been interesting to see what would have happened if the console released earlier everywhere else as it had a pretty great library of games, with the CD library in particular being much better than the Mega Drive's CD offerings.
