All tests were performed with the same team:
Shield Monica (support), Chiyo, dotty Beth, axe Fabella (unawakened)
All on floor 46, first round, as the screenshots show.

I didn't bother including that in the screenshots since it seems irrelevant to the results. I tried to keep the battlefield the same where possible, but as the screenshots show, that wasn't very often. It, too, is likely irrelevant.

"init" is short for "initial state" and "res" is short for "results". A lazy hack of enforcing the right sorting.

I like Hype.

Some calculations and comparisons:
11, 3, 326
x2 (121 less score): 11*1.7=18.7 (19), 3*1.7=5.1 (3), 326*1.4=456.4 (469)
x3 (65 more score): 11*2.4=26.4 (26), 3*2.4=7.2 (7) 326*1.9=619.4 (618)
x4 (229 less score): 11*3=33 (33), 3*3=9 (6), 326*2.4=782.4 (781)
x5 (71 less score): 11*3.6=39.6 (50), 3*3.6=10.8 (15), 326*2.8=912.8 (911)

Across the board it seems true that stage rewards are modified by the "rewards" multiplier, and dream rewards are modified by "currency rewards" multiplier. Except sync mats, which do whatever they please, and an anomaly in stage reward bowknots at x5. More trials probably recommended. Especially involving later rounds.