@PUNSOFDAMAGE: "Is EU or NA Greater?"...
RP price adjustment in Europe
...apparently North America is better... because they are the only region since launch to not have their cost of RP/USD rate go up.
Apparently 5+ years of "natural" inflation in USA and periods of weak USD (2009; following the crisis) makes no difference to RIOT... but alas when other currencies move its /GAMEOVER for them.
So alas... the question you posed in Prime Time League can finally be settled once and for all... as RIOT HAS SPOKEN!