In my opinion, yes, they will both sound the same with your salon2's. The mc452 and mc462 is really good for speakers that have huge current requirements like Wilsons, the Kef Reference 3/5, Kef Blade, and estats. Your salon2's are actually not a nightmare load for the partnering amp, the phase is modular to the impedance curve so compared to the aforementioned types of speakers with huge power suckouts in the midbass regions, you probably won't ever be anywhere close to 50% of the power of the mc452.
It's also really pretty and not a unsound 'investment' since McIntosh products depreciate very slowly, or not really much at all if you buy a used one at a good price. Might even appreciate very slightly depending how much you paid. I think the mc452 and mc462 will be a classic amp in the future. Better value then Pass Labs too, imo. The comparable amp from Pass would be the .8 X series, X250.8, etc and those have much more distortion. Also, Pass products tend to depreciate quite significantly. I mention Pass because it's the only other American made (esoteric) solid state class AB amplifie manufacture that I would put in the same league as McIntosh.