Season 3 heroes stat buffs

First, I know that there’s already a post discussing the balance changes, but that post is…

Most of the changes are very small but consistent 5-10 point increases on all stats. Will these changes have a meaningful effect, or are they mostly cosmetic? I know from the Damage Calculation post that there’s something of a breakpoint in damage once attack is greater than defense, will these changes make push some heroes over the top so to speak into being bigger damage dealers? Or vice versa on defense?

I know you mean well, but this thread is for balance discussion.