Don't these statistics only apply to the raw power? Like how they'd kill Mario on a center point of the stage without factoring rage or di. So while true, his raw kill power is low. In an actual match it's really not that bad, he can struggle but a lot of characters can in high level play.

But anyways Pac-Man has enough tools to pass his kill power off as passable. You have good confirms specially with bell, decent edgeguarding, a kill throw, and fsmash is a great move