Good Read. And IDK if its been said, but look at his section on Olimar, gimpyfish totally predicted the Brood upset at Apex.
I used to feel the same way about Olimar gimpy. His onstage game is beast. And I played him for a while and I still do, but he has large flaws that non-olimar mains dont seem to notice. His smashes have no priority, his grabs have no height, and his aerials are mediocre. I kinda feel like Diddy has a completely better on stage game, that can somewhat mirror Olimars. Diddys out of sheild options of throwing a banana is quicker and better then any of olimars out of sheild options, including Olimars sheild grab. Diddy's bananas when thrown from the ground follow a similar trajectory to olimars fsmash and grab, except they come out faster(frame 8 in comparison to frame 11 for olis fsmash and grab), go farther (atleats 1.5x the length of olimars fsmash), have less lag (26 frames as compared to olimars 39 for fsmash and 29 for grab) by a large margin, they also have infinite priority (they can beat the tornado while olimars moves can not) and if the bananas land a hit they should guarentee 20+% damage on the opponent after a follow up (the follow up is guarenteed). Diddy can mirror olimars upsmash too, as the bananas can be thrown straight up and have low enough lag that hitting an opponent in the air with them can guarentee a quick up air follow up. I feel it wouldnt be a stretch to say that diddys aerials are atleast as good as olimars (if not better). Olimar has better kill power, but most of his solid kill moves have reasonable ending lag and are somewhat hard to set up. While diddy has less kill power, but much easier and safer setups and with combos and fresh kill moves his power wont even be much less. Diddys kill moves almost equal olimar being able to reliably kill with a quicker, longer, less laggy fsmash at like 120% damage (before the hit), even red/purple pikimin usually dont accomplish a kill at that percent with fsmash unless near the edge. The only onstage advantage I would say olimar clearly has is spam And olimar has good spam, but i think its also overrated. Aside from purples none of his pikmin create sheild stun or hitstun that wud cause the enemy to slow down on his approach. Also if an opponent has a low lag, multihit, large hitbox move, olimar cant even force the approach. A mario cud stay at the other side of the stage just short hop dairing and the pikmin wont even get a chance to really latch or do any damage and if mario has the lead that could be a problem. And besides, its not like diddy doesnt have a decent spam move with the peanut gun. Anyway, my final message becomes, I think Diddy has a better onstage game then olimar. Also, one more thing, olimar has very few options to deal with things like IC desynched blizzards, because of its range and priority. Olimar can not fsmash through it because his moves have no priority and they just go flying away, diddy does not suffer from this issue because his bananas have almost infinite priority and can go right through it (just something to note).