You're right, but KD also is 6'10, has a great wingspan, and is one of the best scorers pure scorers ever. McRae doesn't have some of those factors to help him.
If Nicodermus can't get weight on Jordan, I doubt the NBA trainers can either. That's just Jordan's frame, long and skinny. I can't see him putting on more than 10 more pounds. Also I noticed you were talking about KD's wingspan, from what I understand McRae's wingspan is 7ft.Granger is 6'8 225 I don't really see the comparison? I think Jordy will make the NBA but it's going to take him a few years to develop and put on weight.