User blog comment:CookieKid247/What is your favorite form of Super Saiyan?/@comment-4462890-20130902141859/@comment-4462890-20130902165338

DBO is canon. Akira stated himself that it was his official (read: canonical) sequel to DBZ. GT is just a side story and is just as canonical as the movies (which all but 1 is physically impossible to canonically plant within the timeline).

Also, about your picture of SS4 meaning that Akira Toriyama created Super Saiyan 4:

たとえば　このGTに登場する『スーパーサイヤ人４』というのは中鶴くんのデザインで、上に描いた絵は、ボクがそれを見て描いた　似顔絵なんです. うまく描いたでしょうか？ For example, "Super Saiyan 4," which appears in GT, was Nakatsuru-kun's design. The image I drew above is the likeness I made after looking at it. Did I do a good job?

Look up the sources for your images before you start making wild accussations. It makes you look bad.