The problem with teaming with Diddy is that you need a LOT of room and near flawless coordination to pull off any of those gambits...which is unlikely you'll have both in a given situation. Dedede is a giant target that needs to stay grounded in a lot of situations and Diddy is a ground based character as well. Its just not a great idea overall. Like theres some potential setups that can be devastating but its just unlikely you'll get those.. Then add on the fact that Diddy's recovery is gimpable and he can't kill and that adds more problems.
The team is probably strongest on a large stage like FD and others where they can just wall and damage rack. Similar to how we operate with Snake and Oli.That works. Its better than going for overzealous setups.
I teamed with a good Diddy and we cranked out a 2nd place (I used
as well) ...but it was hard.We did have sick chemistry though There's much better partners.