They are just as powerful IME.
For any of the MTB models* with the same/equal pads there’s basically no difference in power between any of the 2 piston models as (AFAIK) they all use the same size master/slave so from a power POV there’s no difference, but from an adjustment and heat POV there are differences.
The external reach adjustment is only worth it if you’re a fiddler, otherwise set it correctly once and you’re done, the bite point adjust of the posher models (XT>) is borderline, for some people it’s important for others not so much, and it doesn’t make a huge amount of difference anyway.
The differences in the pistons and their ability to cope with heat again may or may not be an issue for you depending on your brake use.
Reliability should be on a par across all models, if you get a dodgy it’s bad luck at any price point.
Deore are hard to beat at the price.
*trekking use a different lever blade profile and possibly differences in master piston too as well as pads?