human-capacity difference between Downstairs at the Middle East and Upstairs quoted on their site
is 575 vs. 194. To me, however, the Upstairs space appears significantly
less than a third the area of the Downstairs. That's just me, though. Never ventured into either venue sober, as far as I can remember.
Dunno if Amanda sold out her last ("Creep")show at the ME Downstairs (it certainly didn't seem
packed to the gills, but then again, I've known the ME hierarchs to call a show there sold out [and not sell tix to friends of mine] when it feels only 3/4 full [no doubt to please fire commissioners & such rather than from some generous impulse to forego ticket sales for others' spatial convenience]). But I'm pretty sure one or another of the large Amanda solo shows (paradise, 650 capacity?) I've been to recently was pretty thoroughly sold out.