Ah, that makes sense. So the FediDB info seems to be wrong - I wonder if they got confused by cloudflare as per the other comment in https://feddit.org/post/4529920/2993842 ?
Also, is there a way to let them know to update it? I guess someone could report an issue on github…
I guess they back either other up. Like archive.is is able to take archives from archive.org but the saved page reflects the original URL and the original archiving time from the wayback machine (though it also notes the URL used from wayback itself plus the time they got archived it from wayback).