Yeah, exposing to the right does help, although, with the MK3 I don't have to. I used to do it all the time with the 20D with great results, except that often highlight detail was lost, which doesn't happen with the Mk3.
I do definitely notice a big improvement over similar shots from my MK2N at ISO1600 though... about 1 stop improvement, and better shadows to boot if I want to lift them a bit.
EOS R6 Mark II - Sigma 50/1.4 Art - Sigma 14-24/2.8 Art - Canon EF 70-200/2.8L Mark III - Godox Xpro-C - Godox TT685C x2