Thanks to the OP.
As to Aria; now people that grok math can crunch the numbers for me, and I can focus more on my story and campaign. Their number crunching helps me understand the underlying math of the system, its logic, its common sense as it were. That way when I need to make that "common sense" rule on the fly I grok the game well enough to make good rulings. If math isn't your thing, that's ok, plenty of us like math though.
To those who are interested, how does this analysis stack up with the table on page 184?
Any serious discrepancies?
(It looked like a good match to me, but...)