They do discuss some current differences in playstyle toward the bottom, like faster openings and more use of support heroes, which the self-play has invented (

They do discuss some current differences in playstyle toward the bottom, like faster openings and more use of support heroes, which the self-play has invented (along with rediscovering standard tactics). So it's at least a little different. Whether these are better is hard to say. It's not superhuman, after all, unlike AlphaGo, so it's not presumptively right, and you can't doublecheck by doing a very deep tree evaluation (because DoTA doesn't lend itself to tree exploration - far too many actions and long-range).