Morse would be great for the Yankees. If Orioles get them it is just another AL East rival getting stronger while the Yankees sit back and hope for the best.
Baltimore has a real chance this year, and is desperate to get in the playoffs being so dead for so long, so they move a good prospect to get better now. The Yankees with that -9 DIFF may be thinking it's just not worth moving prospects right now, see you in 2014.