+1 ECL for 4 extra points?! That's the difference between having a 14 and a 16. Is +2 to a single stat worth +1 ECL? No way! There is never a time nor a character that I would trade a whole level for +2 to a stat. Look at the +1 ECL races - Aasimar has +2 to two stats, instead of balanced stats, and gets a bunch of very useful special abilities. That's +1 ECL. +2 to one stat is practically negligible. Sure, it could be +4 to one stat, but only if it was a dump stat in 28 point buy.
Maybe I have a different definition of high powered, but if 16 14 14 12 10 8 is typical, I honestly can't see how 16 16 14 12 10 8 is at all high powered.
-The Souljourner