Correction...new balls may hit 5% further, however in terms of clubs hit to holes, the difference is negligible.
eg
BPB
10, 2mph cross wind still taking hybrid that won't stop
11, still a 7 iron to green
12, can carry bunker downwind, could before, still a hybrid left (being generous, may carry it into a slight headwind)
13, still unreachable in 2
14 still a 6 iron when flag at back
15, no change
16, still a 3 iron
17, still a 3 iron
18, still a wedge to the front pin
So, in summary, based on BPB back nine, the legend balls make little difference...IMHO