Talk:Greater Doppelgänger/@comment-200.59.28.209-20180717064051/@comment-45.56.46.26-20180717120852

It's not clear that Super-Tier magic has anything to do with having caster levels.

The description makes it clear that Super-Tier magic is gained and cast by entirely different rules than other spells, and works more like a skill than a spell. So the question itself is based on a dubious assumption about more similarity between Super-Tier magic and other spells than we could confidently discover from the text.