I can agree that our Diplo game is worse than Stewardship, or barely breaking even because Doof himself shores up our Stewardship, but we have a range of powerful Martial units, and our Intrigue engine is pretty solid if not amazing. Diplo is either our second worst or outright worst stat.
That's the opposite of what I meant. In order from best to worst I would rate our stats: Learning, Intrigue, Diplomacy, Martial, Stewardship (Discounting occult because it's an entirely separate field we've barely tapped, even if we do have some interesting stuff going on)
Let me Explain
I don't think I need to go into detail about how a base 38 + 40, 38, two 30s, and a host of other situational boosts puts our learning in the stratosphere, (as an example, wendy's 58 on robotics)
In terms of Intrigue, we have a Floating action (even if it recently got a debuff) and a squad of decent focused heroes, Tobe, Mez, Mirage, Janna and Kitsune all do solid work in the field, we have access to the Dickens Detective Agency, and Olivia stats are great even if she's not around as often as @*$^%
In Diplomacy we have Technor, Kitsune, Wendy, Mirage and Janus all as solid options with Goofy as a dedicated slot. While we could use a Prince in this category (technor's a generalist ad Mirage has other demands on her time) we have a variety of options with decent COS
In terms of Martial: we have two Very solid physical fighters, in Khan and Norm, but Khan is limited by the fact that going loud isn't fantastic for national actions (and most of our martial nationals are tech upgrades or "Assault a rival" which is a risk we are reluctant to pull the trigger on) and Also the fact that we haven't completed the DC 170 action for our second Martial action. We have a decent range of 20-30 units for questing, but most of them don't have the temperament for martial nationals and the rest have demands on their time (jumba has the 4th highest, 28, but I highly doubt he's gonna be pulling off assault a rival or Corporate Sabotage
Finally Stewardship: Stewardship has Roddy and P+F certainly, but has the Smallest group of mid-rangers, and most of those midrangers have a separate thing pulling them away from doing stewardship. We recently got the 1 shot marvin which is solid, but we're lacking an organizer/central authority figure for the stat aside from Roddy who is A, worse than any other leader in their field (29 base, compared to Khans 55, Technor's 33 Mirage's 30(and #*$^%'s 40) and Ludvine's 40) and has lower loyalty(15, shared only with ludvine, who has the stats and others in the field to afford it, everyone else is at least 25 without decays) , other stats for options like Quest leading or other useful traits like Captain Doofania or Ludvine's incredibly useful Omnidisciplinary. That's why I'd rate our stewardship as most in need of shoring up, it's certainly not unfixable or actively broken, but it's noticeably harder to fill slots for than any other category