I wasn't comparing them, actually.
Waluigi's situation sucks.
Plant's situation is complicated, and it was just giving all the specific information we have(while saying why I don't believe for one second it has any real evidence for being base. Just dubious information that lack context besides the demo information).
The point of the timing of the DLC being greenlit is about the only information we have to figure out a timeline. I already outlined the information the previous post, but the only core factor is DLC was not actually planned at any point during base alone. Nintendo approached Sakurai with the idea of it in July 2017. That actually means DLC characters do have a fairly clear timetable of when they'd be decided on. There's also hints from Sakurai's words that he never changed the character project plan for Base at any point, which would means Plant deliberately wasn't part of it. Though it's still YMMV on how his wording works(we also have had odd translations before).
But overall, the evidence mainly points to Plant being DLC when you analyze the timings, how general recordings work(there's zero reason to actually believe the Guidances were done at multiple times instead of trying to get done in a single time period, especially with few needing to be done. It's an easy thing to do near the end of the creation cycle, but also with a minor amount of characters to record lines for compared to Smash 4(as many are recycled), this actually means the idea it was recording multiple times apart is really hard to believe. Why would they waste money getting the same actors and actresses together instead of trying to do as much as possible bulk-wise? Very few characters even have lines, so getting less than 10 done all at once makes far more sense too. Especially when you consider how much content the game had to go with, and still had issues at launch while missing multiple normal modes(like Home Run Context or Stage Builder).
That's pretty much why I don't believe for one second the Guidances are actual evidence of it being base. It doesn't add up. Why would they pay actors and actresses yet again to record just a few lines instead of doing it in bulk within closer to a week/month at most(depending upon how various contracts work, etc). Likewise, do note we don't see any actual lines from the game via demos or trailers till after DLC was officially greenlit, showing even more... a lot of this stuff was recorded next to each other. The only time stuff was recorded far apart would be during the actual DLC passes(as there's really no way to record them near each other. Kind of the downside of having them revealed and super far apart).
I hope that explains it well enough to what I mean. As, to be fair, the Guidances are far more complicated in how they would be done(or in a way, super simple to how it would be done). Overall, I'd say it's most likely the Guidances were finished up around when DLC was greenlit, with Plant being the first DLC character with one, and nobody else being outright figured out enough to get one(the generic DLC message is the same way for 4. Mewtwo was clearly greenlit to go as DLC specifically yet didn't get one. That does show there's a very low chance they'd do recording sessions apart to such a massive degree. It's a bad idea to keep them apart).
