[AStonesThrow]

Below the Ivy League and Premier type universities, many systems are based in/through a particular State, and so we could be more granular with a huge territory/populace and evaluate which States are ranked where for what types of research.

Further, it may be the case that Europe doesn't need/want a lot of high-tech, high-cost intellectual workers and opportunities that would drain brains from pools that do something more relevant, like soldiers, transport/shipping, or retail workers or HCPs.