The spreadsheet above does not include locality pay, which seems to be a major contributor to salary. Look at http://www.stuckmic.com/atc-pay-scale.html
for the entire salary. Compare a max of $109k for a CPC at a level 12 facility according to the spreadsheet with $141k at ZNY according to stuckmic.com
Well as the name in implies, locality varies for each location. Also if you work outside the lower 48 you are not eligble for locality. You get payed COLA which can be up to 25% of your base pay but never more.
However as a new hire you start at or near the bottom of each pay band. There are only a couple ways people find their way to the top of the band. One is to transfer to a facility of a lower pay level, in which case you would keep your current pay or get the top of the band (which ever is lower). Another way is if you get converted from one of the old pay systems.