Yep - I believe in one of Toliver's books he pointed out that Gabreski and Preddy had the same rate of claims as some of the Luftwaffe top aces and had they flown +1400 missions (like many German aced did) they too "would of" had kills into the triple digits.
I think that we should add to this the fact that as Gabreski writes in his book they couldn't always follow after an enemy into dive and score a kill because they had to stay with bombers and protect them. In case of pilots flying as bomber escort a victory doesn't equals a kill. But is it less important?