Since when do feats need to be accepted multipliers? If it says that your power multiplies 10 times your power, then it's definitive proof, you don't need feats for that, just accept what the work has shown, unless there is any contradiction, like the kaioken
Goku says that he increases it 100 times and adds power and speed, so I can say that it is valid, because there is no need for feats, since we have a character's trial.
I don't really see a problem with that, but how the wiki handles things should change.