I don't think that's true. In 1998, United Airlines was paying it's most senior widebody pilots $192/hr, then Delta came along with a new contract and raised the bar by paying $196/hr to it's most senior widebody pilots. That is the highest the pay ever went and the B737 pilot pay was quite a bit lower.
Where the hell are you getting your information? Not even close to accurate. UAL negotiated the most expensive pilot contract in history (at the time) in 2000. This was after an amazing show of unity during the "Summer of Love" in which the UAL pilots banded together to achieve a truly amazing contract. Top 737 rate? About $220/hr. The following year, the Delta pilots negotiated Contract '01, which broke UAL's record for the most expensive pilot contract in history. Top 737 rate? About $230/hr. Top widebody rate? About $320/hr. At the time, SWA 737 Captains topped out around $170/hr. In other words, it wasn't even close. Even today, 8 years later, the SWA "industry-leading" rate is 10% below the top rate negotiated prior to 9/11 by the ALPA carriers.