I think most of the stats are deceiving. In my opinion, most of the actual activity or users read, and comment happens on Lemmy, as opposed to mastodon where you mostly just have observers. 
Comment on subredditstats.com now promotes Lemmy and the Fediverse
odium@programming.dev 11 months agoI knew mastadon was the largest, but I didn’t realize how much larger it is. Mastadon is 78% of the fediverse users, while lemmy is third place at 3.3%. Misskey is second place with roughly double lemmy’s users. Looks like it’s a jp only thing.
vamp07@lemm.ee 11 months ago
Kierunkowy74@kbin.social 11 months ago
You may want to browse https://kbin.social/microblog tab on /kbin (which shows Mastodon, Misskey, etc. toots/tweets/notes/whatever there) to make an opinion for yourself.
Individual magazines have their own microblog sections (like photography
Bishma@discuss.tchncs.de 11 months ago
That make me wonder… Does anyone know if Firefish/Calckey is counted under “Misskey” or “other?” (Firefish is a fork of Misskey)