So no doubt did most of the people who held the record before him.
Considering the last 2 comp records and the courses they were set on.
Levens (Wiggo's Comp Record) has a gift hill and a very large RAB that can be taken on the tribars at very high speeds.
V718 (Hutch's Comp Record) is simply rapid as fark... nice surface, relatively sheltered, enough traffic for a tow without being too heavy as to be dangerous, SUPER fast finish section and if you you get a tail wind on the return you get pushed 6 mile since the return is further than the out leg.
Fast courses and fast conditions are simply part of the comp record breaking recipe.