Short answers, pulled from the story.
The Capcom Classics Collection is a 2005 video game compilation released for PlayStation 2 and Xbox that preserves sixteen classic arcade titles. The games were converted from earlier PlayStation and Saturn ports created by Capcom Generations in 1998 rather than using the original arcade source code.
The second volume of the Capcom Classics Collection was released in North America on the 14th of November 2006. This release expanded the library with new titles but excluded Super Street Fighter II: The New Challengers from 1993.
Sensory Sweep developed the Capcom Classics Mini-Mix for Game Boy Advance which was released on the 19th of September 2006. This version included three Nintendo Entertainment System titles: Bionic Commando from 1988, Strider from 1989, and Mighty Final Fight from 1993.
Super Street Fighter II Turbo, Tiger Road, and Trojan did not appear in the portable versions of the Capcom Classics Collection. These exclusions limited the scope of the handheld experience compared to the home console volumes.
The collection included extra features such as historical overviews, artwork galleries, cast profiles, and hints locked behind gameplay achievements. It also introduced a scoring system for three difficulty settings and a Deluxe Versus Mode for Street Fighter II games.