I think your post show some of the short coming of comparing airlines strictly from the pay and retirement page. Hourly rates as published on APC, or any other website are a bit misleading. As someone has already alluded, trip rig, duty rig and other minimum pay provisions and vacation pay, affect take home pay to such an affect that hour rates, why a good guide, just don't tell the whole story. As such, it pays to read the blogs on this and other aviation sites to get a truer picture about who pays the most (as that appears to be your only criteria )
Strictly talking money, we at FedEx do good and some pilots do great. I can't speak for Brown, but for guys/gals who are willing to chase money at the expense of all else (mainly time at home and the willingness to leave on short notice to chase a trip) you can make some really great money. But at the end of the day, do you live to work or work to live?