The Scylla is smaller, a good amount of room in the robobrew. I’ll time mine when I brew next, although recently I’ve been letting the wort cool for quite a while on its own (with whirlpool attachment) to better utilize my whirlpool hops.
Brew day today: 20 min whirlpool (hop stand) - end temp 190 F. The JaDeD Scilla took it from 190 F to 70 F in 8 minutes. Last few degrees were slow (water temp was 64 F)