Vapodog, Winchester didn't bring out a cartridge almost identical to the .30-30, they were introduced at the same time-and as I mentioned before, the .32bore was more popular than the .30bore in that era, the .32spcl was a considerable improvement over the .32-40, so Winchester got a Standby .32bore that was better than what was available, but still offered a "hot new" .30bore.

In all actuality, the .32spcl DOES indeed have more muzzle energy than the .30-30, but as far as practical applications go, their performances are too close to call, they perform almost identically in the field, while results on paper may not be so.