So basically Angle gets in because he wrestles the less challenging style and produces matches with less quality work?
That sounds like quite the crock to me. A body of work is a body of work, regardless of whether or not a wrestler is Japanese, British, American, Mexican or Canadian.
Anybody who would attempt to make a "Greats" list w/ an only "American Style" roster is out of their mind, as that list would be very short.
I think you're confusing "American Style" with "WWE Style". Is Angle an all-time great in the WWE? No doubt. Is he an all-time great in pro wrestling? Far from it.