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The panel you yourself shared have Roshi stating that the Tri-Beam is so colossally powerful that it drains one's own energy, which is not something that Roshi's Full Power Kamehameha did (future Kamehamehas are irrelevant to this statement).
In fact, I think you are twisting Roshi's words, he first praises the Tri-Beam destructive force, yes, and then he makes a pause, only to say that the Tri-Beam is many times more powerful than the Kamehameha.
It can't be any more clear than that, and the Super Kamehameha? It's just a stronger technique unrelated to Roshi's original Kamehameha.
How do you feel about this statement of the destruction shown being far superior to the Kamehameha when the Kamehameha destroyed the moon