Just downloaded Ironclad to the Wii today and decided to do a comparison between the Wii version and the Neo Geo CD version.
Graphics: For the most part they are the same. However I noticed that backgrounds and effects are missing when your plane uses a bomb. I think first boss is also missing a background as well. Not cool not cool at all.
Sound and music: Huge difference here: I always thought that Ironcald was Neo Geo CD only. The version they offer is the "cartridge version" what I mean by that is the sometimes superb CD sound track was converted to a midi format as is some of the sound effects. This almost kills the deal for me as the midis seem almost half assed.
Game play: The thing that sucks about a Neo Geo home system is that you only get 4 credits guess how many continues you get here (hint more than three but less than five). On the Neo CD version you at least get unlimited credits. Other than that controls are fine and it's playable.
Overall: This could have been done a lot better. There is no reason to convert the CD music and sound files to MIDI it's unacceptable. The missing backgrounds and effects is also a near deal killer with me. Missing backgrounds and effects are fine if your working on a new EMU. But for the Wii also very unacceptable. This game should have either a). spend some more time in development b). If there were emulation limitations with the virtual console been released as part a CD compilation where the issues could be addressed or c). not even been released at all.
Final score: D