I dont quite see Nash, but i do like Garland allot.
Nash played 4 years of college and was a late developer. Nash was also a better shooter than DG from the jump and one of the worst defenders I have ever seen, I think Garland can become a decent defender for his size, the effort is there and he has the athletic ability to defend pg's.
I dont see the comparison, but its not a knock against Nash or Garland, just different players.
Garland has great handles and good vision. If he develops into more of a killer in crunch time, i see Lillard. But only if he develops that killer instinct. In general play comparisons are difficult.