The first post I put up for Pride month had 92 likes and 62 boosts over on Mastodon, meanwhile here on the 'gram only 91 people actually saw it - despite me having 1500 followers and sharing it to Stories.
That's not a small difference, and it's not an outlier.
Over the 28 days before I scheduled this post, my Mastodon posts had 979 engagements, while on Instagram they had 153.
Not only that, I have had more enquires through Mastodon this year, than I have had through Instagram ever.