Bad news for Apple: The reasons for iPad's enterprise success don't bode well for the much-rumored iPad mini's chances in the enterprise.

Consumer Intelligence Research Partners, or CIRP, surveyed more than 1,000 consumers and found that one in five who bought the third-generation iPad planned to use the device for business. Yet only 13 percent of users across all iPad models have the same intentions.

So what's the third-generation iPad's big business advantage? It's unclear, and CIRP doesn't say.

There's not much difference between the new iPad and the iPad 2, with the exception of a Retina display and 4G LTE connectivity. All iPads have the exact same screen size. While a Retina display offers some productivity advantages, 4G LTE is still in its infancy in terms of network availability.

Then again, the new iPad's business boon might simply be a sign of the times. That is, the iPad is becoming more acceptable on the corporate network. Apple has been tracking increased usage of the iPad in the enterprise. Earlier this year, Apple claimed that 94 percent of Fortune 500 companies have deployed or are testing the iPad.