Yea, really it's about the 2 safest legit prospects vs 2 of the most boom/bust types. Mean outcomes all around I think both sets of two are roughly equivalent.
On the whole, sure. He's definitely in the conversation. Complete monster with that bat.
But I think the article is referring specifically to his defense. As in Mattingly thinks he's the top defensive RF in the game.
I think Don Mattingly was serious here:
http://espn.go.com/los-angeles/mlb/story/_/id/10988994/yasiel-puig-los-angeles-dodgers-called-best-right-fielder-majors-manager-don-mattingly
http://www.fangraphs.com/minorleaders.aspx?pos=all&stats=bat&lg=8,9,10&qual=y&type=1&season=2014&team=0&players=0&sort=18,d
Bigger gap between Gallo and #2 than #2 and #20.
(Old, non prospect types not filtered out either).
There's no prospect under AA I'd rather have in a fantasy league than Gallo. Actually, nobody is even close.
And we haven't even talked about Sano. An argument could have been made for him being the best pure offensive prospect in baseball before his TJS which shouldn't have long term effects on his swing.
Swing strike rate down significantly this year, power has remained. Plate discipline up. Nobody has crushed A+ at his age in what....forever?
Carolina league is a strong pitchers league too. Guess that's taken into account in his 230 wRC+.
People get way too caught up in prospect rankings when it comes to fantasy. Does anyone actually think Francisco Lindor is a better asset than Joey Gallo? If you do, you should probably just stick to yearly redrafts.