360 pros & cons vs 318

Ive gone both ways 318>360 and 360>318 and other than MPG being better on a 318, seat of the pants power didn't seem much different.... (talking stock engines here) though I never understood, why all 360s I have ever been into (Magnums included) have dished pistons and 318s don't.... I can see that one difference between the engines being a disadvantage on a 360.