A match between John D. Dingell (D-Mich.), the overbearing chairman of the House Energy & Commerce Committee, and the erratic Henry B. Gonzalez (D-Tex.), chairman of the Banking Committee, would usually be no contest. But Gonzalez seems to be winning a spat over the banking panel's draft financial reform legislation. He appears to be forcing Dingell to retreat on a request for a General Accounting Office review of the bill's special-interest provisions. And Speaker Thomas S. Foley (D-Wash.) has put a September deadline on the Commerce Committee's review of the legislation.