Sadly Sf2 Champ was one of a few titles that really could have been a gamechanger for the system in the US market. It along with Dracula X, Gradius 2, Spriggan, Snatcher, and a few other key titles could have bumped the system up from being a distant third to a close third or even second place, from 1993 on up anyway. Hell, even just bringing over all the arcade ports released for the PCE itself would have gone a long way. Altered Beast, Golden Axe, Strider, Ghouls n Ghost etc helped the Genesis make a name for itself on the market. Stuff like Darius, Image Fight, Operation Wolf, Rastan Saga etc would have really helped the Tg16.
Even a close third would have brought in some decent profits. Fact of the matter is though that Nec of Japan did not put the same kind of effort or money into the US market as they did in the Japanese one. Other then a few tv ads they made no effort to make the system look cool and cutting edge or appealing, which is sad because really the hardware was indeed better then what Sega had released, but lacked the needed titles to show it.
The limited number of titles brought over from Japan, the infantile game box art work, and the fact they assumed they could survive off making just a few arcade hits and a couple of exclusives the US systems top tier titles for a couple of years really worked against them. It could even be said that they did not take the US market seriously. They mainly relied on Irem and Namco, and even then did not bring over all the good stuff. TTi could have even gained more of the market had they been allowed a better budget (even late in the game, something could have been done). To sell hardware you got to have the games to back it up. Being a huge underdog of the 8-bit wars, Sega of America knew this well, but Nec simply ignored it.
Sadly it played out the way it did, but it does not change the fact the system gets respect now. People who like retro gaming want the system now, but not for the same reasons people buy crap like the Jaguar or the 32X. Even with the limited amount of titles released, most of the US titles were of above average to high quality and the system is viewed in about the same favorable light as the Neo-Geo or Dreamcast with most real gamers who collect and play both wanting to own one. The games sold well on the Virtual Console even. Their quality has stood the test of time, and now people actually give it some of the credit its long deserved.