Lionel didn't merely have a creative license, they also had their passport stamped with several visas to LaLa Land! Other than their pre-WWII Hudson (which really was an accurate model of a NYC locomotive,) the prototype fidelity of anything with a Lionel label had to be taken with a grain of salt the approximate size of Mount Everest.
Chuck (who gave up Lionel for HO after learning how accurate the Lionel 'O27' 2-4-2 was)
It was a long-standing Lionel practice to use their catalog number as the road number on their rolling stock. I believe that carried on into their HO period.
Chuck