User blog comment:AdvancedRookie/Activision hints at more frequent DLC and content variety/@comment-5485267-20120104231130/@comment-3967954-20120105162125

The point is the anims are changed. If the CM901 was replaced by an SA80 (although that's just an example), the animations would be different from the regular CM901. I was gonna suggest reskinning the T95 for the SA80, but burst fire....eughh.