sei'taer said:
As always metamorian fusion isn't really that much weaker than potora fusion. Goku and Vegeta make the fusion strong, not the method.
Goku and Vegeta are stronger than the average fusee using either method because they are among the top 3 strongest warriors (with Gohan being absorbed into Boo). Stronger fusees make stronger fusions. No shit. But that doesn't mean that the fusion multiplier magically becomes 100x larger with Goku and Vegeta; in fact Goku suggested multipliers usually remain similar, or at least within predictable range when he said weak Metamoran warriors were able to produce a strong warrior, so Goten and Trunks should be able to beat Fat Boo. Which he was right on the money on. So multipliers don't differ that much between much stronger fusees, but stronger fusees just make the result better. That's not exclusively a Goku and Vegeta thing.
Let me ask you, since SSJ Goku and Vegeta were two of the strongest warriors when they made SSJ Vegetto, would you not say if Goten and Trunks fused in the SSJ2 form, they would be counted as even stronger warriors when SSJ2 Goten > SSJ Vegeta? The whole "Gogeta is not much weaker than Vegetto" thing is an intellectually dishonest argument that entirely ignores that Elder Kaioshin said on two separate occasions that Potara is much stronger than the regular Fusion and somehow twists a separate statement about two of the top 3 warriors making one of the best results possible to mean that there's almost no difference between fusion methods. Here's all we know about Gogeta: That in an unspecified form (which could be SSJ2 or 3 for all we know), he can defeat Gotenks-Boo since Goku states if he did a metamoran fusion with Gohan (e.g. Gohan would suppress down to fuse with Goku), they could defeat that version of Boo. And the fact that Goku only suggests fusing to Gogeta after the Potaras were destroyed, and that that was after they tore all the absorbed people out of Boo except Good Boo suggests that Gogeta can't even defeat Gohan-Boo.
Elder Kaioshin also suggests Potara Fusion as a priority over the metamoran fusion even when dealing with a miniscule threat like Pure Boo, he only laments they won't even do a Metamoran fusion after (even though Potara is permanent in the original manga). There's quite obviously a difference in power between Vegetto and Gogeta. If Gogeta's multiplier is like 20x that of Gotenks' (which he'd need to be to be close to Vegetto), then why isn't the multiplier difference between two weak Metamorans and Goten/Trunks like 10000x? There's a much larger power gap between the latter two.