The subject of the 1960s Super Beatle and the AC100 has already been discussed. You're right about the current Mini Super Beetle being designed cosmetically to resemble the AC100. But Vox also knew what they were doing when the dubbed this NuTube based amp the "Mini Super Beetle." It would have been weird if they dubbed it the "Mini AC-100." Besides, there is historical precedent for the "Super Beatle" reference. For a brief time (in late 1964 and 1965), Vox amp models marketed in America were re-badged with more British sounding names like Westminster (Foundation Bass) and Bristol (bass T-60), and, in the case of the AC-100, the "Super Beatle." The first image below is from an ad in the British publication Beat Instrumental magazine, and refers to the AC-100 Super De Luxe. The second image is from a USA brochure Million Dollar Sound, Spring 1965, and uses the name "Super Beatle" for the AC-100.