Someone please correct me if I am wrong, but my impression was that Roundabout, MTC, and LCT all pay every actor the same union-minimum salary during the subscriber run, but that salaries are negotiated for extensions.
So I think Chenoweth is getting the union minimum for the first months of the run of Twentieth Century. I could see the salary issue go either way for Emma Stone (and for Alan Cumming's original run in this re-revival, given the special circumstances).
"What was the name of that cheese that I like?"
"you can't run away forever...but there's nothing wrong with getting a good head start"
"well I hope and I pray, that maybe someday, you'll walk in the room with my heart"