Good thing I didn't pick a gender. LOL
Yes supers & kings are both in the Zophobas genius. But the term king might also be used refering to giant Tenebrio molitor.
I've also heard that the giants T.molitor are given a growth inhibitor to prevent them from matureing. I know some of the greener/organic breeders will avoid useing them for that reason.
As for the National Mealworm Crisis. I've heard so many different reasons why (alot could be hearsay), but alot of the big supplies haven't had mealworms T.molitor for almost 2 months now & it's been hard for breeders to get a bulk quantities of mealies. My sorces tell me it should be over soon. I don't know who PetsMarts supplier is, but I would think if they were affected then you wouldn't have been able to get the ones you just got. But only the T.molitor are affected & you can always go to another food sorce as a back-up.
As for the original topic, I haven't seen any nutitional analysis for sometime so I don't have any numbers for you on that subject. It's a matter of preferance, yours & the geckos. I use the T.molitor because that's what works for me & that's what other breeders advised me to use years ago.
Not to beat a dead horse, don't forget to gut-load.