Why do soybeans have an advantage over corn in biofuels under the Inflation Cuts Act?

Gold Ten Futures, July 4th, according to the results of Bill 40B, the advantages of soybean and CSA soybean subsidies are very different from those of butter, corn oil and waste oil, and soybean subsidies are very advantageous. However, there is a problem that Bill 40B expires at the end of this year, and whether the content of the bill will be renewed next year still needs to be determined by the policy. Judging from the subsidy of Bill 45Z that has been announced so far, it is different from the current 40B calculation method, so it remains to be seen how the policy subsidy will be. If Bill 40B is extended, it will indeed be beneficial to the soybean and soybean oil market, so soybean oil is not much different from the subsidy of butter, corn oil and waste oil. But according to Bill 45Z, soybean oil has no competitive advantage.