When comparing W to FDR regarding war it's **essential** to point out that under FDR no Republican sided with Hitler or Tojo whereas,under W,a good percentage of the opposition party sided with our enemies...as was seen in Vietnam as well.
True, but there was also sizable pro-German "America-first" movement back in 1941. FDR solved that problem by declaring war. Opposition to the war became treason.
Bush should have made it clear how serious he was after 9/11. As you said, 9/11 was another Pearl Harbor. Bush should have declared war.