That test is complete bullshit nothing but subjective opinion.
I agree, I like the Socom as well.i put surefire socom's on 2 of my AR10's and they made a big difference over the normal flash hider type. i havent noticed any fire balls in daylight but i dont shoot these in low light either. still feels like a 308 though, just not so punishing after 3-4 mags.
muzzle blast doesnt feel any different. not like some of the 223 comps i've been around.