EVERYTHING's easier to hit in FFAs and teams lol. You've never been trying to finish somebody off, but somebody else comes in with the dumbest move ever and kills the both of you? Or at least steals your kill? Warlock punches, KO punches, falcon punches, ganon up-tilts, and home-run bat kills are perfect for this sort of thing. You can generally just spam stuff in FFA and be safer than in a 1v1, since everybody's fair game for everybody, and if somebody just so happens to be 'covering' you while you perform one of the silly moves, others may be cautious and not approach you at all. And if that person near you happens to be focused on killing somebody else, guess what, you're off scot-free!
Happens all the time when smashing with my in-group lol.