if it sounded "clean" on all 3, without the bass muffling everything, and the highs not hurting the eardrums, we called it "good" and released.
I wonder if David Lynch watches his stuff on a tiny screen just to make sure everyone has a good experience.
hint: no, he thinks small screens are stupid.
ETA: after like 3 years of mastering and reviewing this way i trusted my ears and my studio monitors enough to know what it would sound like. I also wrote in headphones and mastered on speakers, then remastered in monitor headphones. Anyhow, i think the whole point i was making is "yes, this is a good thing to do, for music, for websites, for software, etc"
If your website takes more than 3 seconds to load on the free Metro Wi-Fi, I'll go back to my search and pick a different page. If it takes more than 3 seconds to load on gigabit on a PC, I'll remember it and never click on links to it again.
If you don't respect my devices, then your work doesn't deserve my respect.
(Don't get me started on people calling themselves software _engineers_)