There's also the issue that "Level VII" is canonically not a true Level but a subsection of Level VI.
why do people say this? Isn't a Lv. 7 outright stated in v-tamer, used in a lot of video games, and heavily used in our currently ongoing card game? Shouldn't it just be treated like Xros fusions, card slashes, digisoul, etc. where it's not universal to every universe but exists in some universes thus making the "not canon" argument empty as there isn't one singular overarching "canon" to base that argument off of?
The issue with
V-Tamer (which is also the origin of
Super Ultimate-level, and thus should be the most authoritative source) is that it's acknowledged that simply (Jogress-)evolving from an
Ultimate is not enough to be a
Super Ultimate, as Omegamon is explicitly still just an
Ultimate-level. In the setting of
V-Tamer, Arkadimon is the one and only
Super Ultimate (until Daemon absorbs Arkadimon, and UlforceV-dramon achieves Future Mode).