Interesting article. Baseball and Cricket are two highly technical games but skills (and athleticism) do transfer. As a former social weekend cricketer in the London area, I've seen a fair few American expats or those visiting cricketing friends have a game or two. Those who good at sport are good at sport - they can hit sixes and fours (which is all that is needed in the middle order of a social team) and can throw the ball in well from the field. Likewise, a good pool player could turn up at a snooker club and string some 20 something breaks together and beat some social players. Also seen fairly decent snooker players have a crack at pool and run out when the balls roll for them (but they struggle on tough layouts against good players and blame luck when the cue ball comes off two rails and drops into the side pocket).
Making it at a high level is a different story though. Snooker to pool easier than pool to snooker though. And baseball to cricket easier than cricket to baseball.