Not saying cr has nothing to do with but additional airflow is also help making low end tq, plus the low cr 318 with xe262h cam is making 45 tq over stock cam at 3000 rpm to with zero cr help and obviously the 4bbl vs 2bbl helps too.
That 10.5:1 ported EQ 247/247 477 hp has the strongest curve everywhere from 2500-6500 rpm it makes 400 hp just before 5000 rpm, 500-1200 rpms sooner than the other 400-425 hp 318's.
My observation was, most would say those cams 224 to 247 @ 50 would cost you low tq even with the higher CR but it's not showing with 5 different builds. Plus there's that Richard Holdener video a low cr 360, stock cam vs xe250h vs xe268h and shows similar down low tq gains the 250&268 make about 45tq over stock cam and same low cr on all 3 cams.
I just thought it was interesting and figured others building a 318 might.