I've seen a few folks saying that despite fewer followers Mastodon has better reach, so I looked up the numbers for my last few posts:

twit followers 23k following 448
mast followers 9k following 124

A controversy: "Apple scanning your photos"
twit rt 10 like 28 imp 3592 click 408
mast rt 53 like 38

A photo: "I agree with this message"
twit rt 0 like 10 imp 1792 click 57
mast rt 4 like 27

A lazyweb: "Calendar in the clown"
twit rt 0 like 2 imp 1479 click 44
mast rt 1 like 0