The top ten prospects in the Mets system, according to Baseball America: Fernando Martinez (Grade B+ from me), Wilmer Flores (B+), Jon Niese (B), Brad Holt (B), Bobby Parnell (C+), Jefry Marte (C+), Jenrry Mejia (C+), Reese Havens (B), Nick Evans (C+), Eddie Kunz (C+). Using this grading scale (Grade A=4.00; Grade A-=3.75; Grade B+=3.50; Grade B=3.25; Grade B-=3.00; Grade C+=2.75), we get an average grade of 3.05.
The top ten prospects in the Yankees system, according to Baseball America: Austin Jackson (B), Jesus Montero (B+), Andrew Brackman (C+), Austin Romine (B-), Dellin Betances (B-), Zach McAllister (B-), Alfredo Aceves (C+), Phil Coke (C+), Mark Melancon (B-), Brad Suttle (C+). I gave Jairo Heredia a B- but he ranks at 12 on the Baseball America list. If we replace Suttle's C+ with Heredia's B-, we get an average grade of 3.00, just slightly below the Mets.
Which Top Ten would you rather have? The Mets Top Ten or the Yankees Top Ten? Just concentrate on the Top Tens, don't worry about the rest of the system. Fiddle with the numbers if you like (use mean, median, average or anything else you can come up with) or use non-numerical reasons if you prefer. But which top ten do you want?