Double Dragon
The Famicom port probably didn’t deliver the experience that big fans of the arcade version wanted, but it succeeded on its own merits.
NES
Nekketsu Kouha Kunio kun
This is by no means a perfect port of the original arcade version of Kunio kun, but it feels like that was never really the intent behind it.
Hokuto no Ken 2: seikimatsu kyuuseishu densetsu
While this sequel was a step in the right direction, gaming was just too immature to be able to create a truly satisfying Hokuto no Ken beat-em-up experience at this point.
Spartan X
Though Spartan X began as an arcade game, time seems to have remembered the Famicom version a little bit better.
Gradius
There are plenty of other changes that had to be made to accommodate for memory limitations of a cartridge in 1986 though.