Not sure there is enough difference.Did you pick that up to reduce the pressure hitting the start of the can, thus theoretically making it less likely to fail?
Given I will use the Scythe as a dedicated 223 can at this point, and my 223 is threaded 1/2-28 I figured dropping the adapter would reduce complexity and save a few grams with perhaps a slight change in dB and pressure.
I'm pretty sure none of those are adequate reasons, but at the price I couldn't help myself and had to backfill the why to deny my lack of self control.