Tates that is one of the worst tests I've ever seen he uses different rated CFM fans on different heatsinks , the only way to really judge it is to use the SAME cfm rated fan on each heatsink , to achieve the higher rating score for the AX-478 he used a fan that ran at 68.5 cfm , for the Alpha he used one that ran at 47 cfm that was not a proper comparison test at all, and you certainly shouldn't judge heatsinks by this lousy test , btw I run a stock hsf so I am not biased one way or the other , but people should not post this test as a heatsink rating as it is so terribly flawed.