Boeing ( BA) is a screaming buy off Wednesday's strong quarter, Jim Cramer said Wednesday on CNBC's Stop Trading! segment.The bulls have been right on the plane maker, Cramer said. He said bears assumed the company would fail to execute on its manufacturing plan, a la rival Airbus, and that the aerospace cycle was peaking. Cramer said Wednesday's blowout numbers show that that analysis is just flat wrong. Cramer also said cyclical stocks are on fire because investors fully expect to see a Fed rate cut this spring.