By comparison with the “iPod Games” that used to sell for $5 in the iTunes Store, the three games in today’s edition of iOS Gems are nothing short of miraculous—older but full-fledged ports of popular arcade, console, and computer titles that in some cases actually look better than they did when initially released. Once a poster child for botched iOS ports, Capcom has brought one of its best Super NES/Famicom games to iOS…