They've just lost all credibility with me.
They obvioulsy didn't "watch" him last season, or they wouldn't rank him so ridiculously low. It's OK to be wrong about a couple of guys, but not a guy who "starred" in College, was drafted exactly where he should have been in the draft, and has done nothing to change his original projections other than have an injury that caused him to miss considerable time and approach his hitting slightly differently from normal.
It all doesn't matter, as a year from now he'll be playing in the Majors and making everyone who "thought" he had no power or couldn't hit look like fools for "guessing" on his abilities instead of taking a look at him in person.
If it was my job to work at baseball prospectus, there's no way I don't view every one of the Top-250 prospects in person, who play baseball East of the Mississippi river. And, if I did watch him and can't recognize the talent that makes up Yonder Alonso, I'd get out of the business forever, because I obviously don't know what I'm talking about.
Yonder Alonso=Jack Clark
Alonso was, is and will always be an RBI-Machine. At the end of every season, there's only one thing I'll be interested in from Alonso, and that's how many RBI's did he get. The answer will always be "an inordinately high number compared to the number of opportunities he had".