Bosses nerfed post update?

Tricep took me all day on launch day. Gaping Jaw took all Saturday. Sentient took me all Sunday and an hour on Monday morning. After I got home Monday I got darkdrift, Dragon boss and helped my brother get gaping jaw all on the first try.

I feel like either every character has to have gotten som buffs or every night lord just got nerfed because me and my brothers skill levels to not align with how easily we got everything today.