Comparisons of intake manifolds purely based on peak power production can be deceptive and that typically is what a lot of people look at when they compare dyno sheets.Its tough to extrapolate part throttle or mid-range performance from dyno charts,there have been many cases where a manifold has proven superior in dyno testing but when installed in a relatively heavy car and driven on the street it was perceived as inferior to another manifold.There are obviously instances where some are head and shoulders above their competitors,but in other instances where they are within a few horses of each other it becomes more a matter of which 1 feels better on the street(driveability).A good specific example of this is when comparing a Wieand Stealth intake for a Ford 429-460 to an Edelbrock Performer RPM,the stealth shines when in a lighter car with WOT only operation(strip)but the RPM is widely regarded as a much better intake when in a heavier car with lots of part throttle operation(street/strip).If you can't find someone who has done an on car comparison with your combination,you'll have to do your own to know for sure.