Is he really all that highly touted? He's stuck at first base defensively, he doesn't even seem to be excelling there, he has very limited OBP skills, and plus power potential that has yet to show up in games completely.
What does that project to in the major leagues? On the 75th percentile (meaning it's an optimistic projection but not his absolute peak) that probably means a .290/.350/.500 hitter - nothing to be ashamed of but nothing really special as a first baseman without plus defensive tools.
But these scouts are talking about his "consensus" which probably means his 50th percentile projection, which is probably more like .275/.340/.460, which is a backup major league first baseman.
To give some perspective, there were 14 NL first basemen who qualified for the batting title this year. Nine of the 14 had an OPS of .900 or better. Only 3 had an OPS of less than .830 (Jorge Cantu, James Loney, and Daniel Murphy - not exactly guys who probably have long-term starting job security). The top 9 starting NL first basement all have OBP of roughly .400 or better except for Ryan Howard, who has the most power of anyone in the majors.
In general, I like Marrero but I'm frustrated by his lack of development in the field and at his OBP skills. Without those things in place, I don't see why anyone should expect him to be more than a second division starter for 3-5 years, and probably always in danger of losing his job to a better hitter.
