You can explore specifications at this site:
https://www.rvguide.com/specs/
Just looking at a couple of things the Mirada (did you mean 35BH?) looks better.
GVWR: Mirada – 22000, Intent-18000
As you said the Mirada has better Fresh/Gray/Black tanks: Mirada 70/90/90, Intent 48/40/35
Also nice, I think the Mirada uses Azdel Composite panels.