Thomas is not a superstar. Those are special players, Thomas is not a special player.

I can accept the idea Thomas is not a "special" player, so long as we understand that the list of "special" players currently in the league is very short.
Off the top of my head (so I might be missing some players) I'd put the list of superstars at: James, Durant, Curry, Westbrook, Harden, Davis, Leonard, and Paul. I think Cousins, George, Giannis, and Griffin are on the cusp and might be superstars (especially in different team situations). I'd put Wall, Irving, Butler, DeRozan, Klay, and Lowry as a slight tier ahead of Thomas. I'd put Love, Hayward, Draymond, Lillard, Walker, Millsap, Drummond, and Aldridge in the same general range as Thomas (you could make a legit argument for any of them ahead of Thomas or Thomas ahead of any of them). Towns, Wiggins, Embiid, etc. are in a different class as they might someday be superstars or they might not, but they aren't there yet. And then you have the guys like Dirk, Dwight, Melo, Wade, etc. that were once superstars but are now on the downward slope (some are obviously still better than others) who mix in in the various tiers above.
So I'd have Thomas in the 19-27 range. That is a very good player, but not a special or superstar player.