Actually I am like Dragon's Curse over Wonder Boy III. I have soft spot for the music of the Turbo Grafx 16. Also I feel the control is better on the Turbo Grafx over the SMS. But I am play both these games on original hardware with original equipment for what it worth. The SMS is a quality game but I am feel the Turbo Grafx 16 Dragon Curse is step up over Wonder Boy III.
The SMS is have better cover art however than the Turbo Grafx 16 cover art. I think Turbo Grafx art work is loose everytime.