I agree with that,especially when it comes to guys with experience with camming a V8,and trying to employ that experience into picking a slant six cam,is almost always going to be less that optimal(to put it nicely).
Two main things to remember for a slant vs. a V8 with cam choice is that and inline 6 gets its power stroke every 120* of crank rotation,and a V8 is every 90*.And as far as slant six vs. small block mopar in relation to flow(cfm) of the intake/exhaust Intake flow is relatively poorer than exhaust flow (flow ratio).
