Was a slow day at work today so I drew up this RA efficiency chart in response to a question on VN. Shows what a realm skill point buys you.
Aug stat RA's
Aug.+Str.RSPs.Str/RSP.Str/RSP this level
1....4....1.....4......4
2...12....4.....3......2
3...22...10.....2.2....2
4...34...20.....1.7....1.2
5...48...34.....1.41...1
For Wild Power/Mastery of Pain, Wild Healing and Wild Minion, the diminishing returns are a little worse (as if it's shifted up a column):
Mstr.+%.RSPs..+%/RSP..%/RSP this step
1....3....1.....3.....3
2....9....4.....2.25..2
3...17...10.....1.7...1.33
4...27...20.....1.35..1
5...39...34.....1.14..0.85
For some abilities like Mastery of Parry/Block (AoM is even more severe, and MoM is the worst), the steps up are pretty bad:
Mstr.+%.RSPs..+%/RSP..%/RSP this step
1....2....1.....2.....2
2....5....4.....1.25..1
3...10...10.....1.....0.83
4...16...20.....0.8...0.6
5...23...34.....0.67..0.5
Here's the chart for MoM:
MoM.+%.RSPs..+%/RSP..%/RSP this step
1....2....1.....2.....2
2....4....4.....1.....0.67
3....7...10.....0.7...0.5
4...11...20.....0.55..0.4
5...15...34.....0.44..0.285
/courtesy bump for all your hard work!