User blog comment:The great Creator of Dragon Ball/monster vs Godzilla./@comment-3295279-20110206035939/@comment-2161865-20110206042923

Idk. Everyone says Goku is stronger than Kid Buu because Goku says, "Maybe at 100% I could beat him." Let's look back.
 * Goku wasn't certain. He could have been wrong.
 * Frieza could've beaten Goku at 100% (in the anime), but was quickly worn down due to power strain. The same could happen to Goku.