What are you hoping to improve, honest question?
I have not heard the Kanta but have owned a few and heard a lot of focals. I have demoed the Salon 2 many times as they sit on the floor of my local shop in a dedicated room, I owned the Revel 228be for a few years.
as a whole the Revel Salon is technically about perfect and technically a better speaker which can be seen in the measurements. Subjectively I find them a touch lacking in transients but they do play silly loud if wanted. The bass goes very deep but it is tuned very flat and does not have that kick of lifted bass unless your room adds it. When I was shopping for speakers the Salon is the only one that made my own system at the time less enjoyable when I got home as the Salon was just all around better. A great speaker but I would worry about driver support as they are officially discontinued.
looking at the measurements the Kanta shows something a little off with on off axis peak around 6khz (cone breakup?, poor crossover design?) and a touch more bass around 100hz but less extention. Treating the first reflection/side walls should help the Kanta. I would imagine while the revel goes deeper it might have less perceived kick due to the stronger peak in the Kanta’ and the lower efficiency but this is just a guess.
I know when I was demoing the Salon 2 and the Sophia 3 I actually like the Sophia a little better for it having more kick in the bass, but their was no argument the Salon was the better more accurate speakers with more detailed highs, but the Sophia moved the soul more with bass kick/punch.
My point is, perfect might not be what you like. If they are local demo them, they are some of the best speakers made imo. They set the bar high and it has taken years for other brands to catch up (I believe they have). I have personally found JBL 4367 (also part of the Harman group) to be more enjoyable than the Revel Salon and would not do a straight trade. They are also super smooth but far more dynamic/transient.
