With older versions the reasoning was different. Both Kickstart Core and Kickstart Pro default to loading jQuery off a CDN. However, you may have wanted to use Kickstart in an off-line or high latency environment such as an airplane, when you have satellite Internet, when travelling abroad where data is absurdly expensive etc. In these cases, if the two JS files were present they'd be used instead of the CDN. However, Kickstart Pro's only difference to Core is being able to download archives from remote storage which requires an Internet connection. Since it always requires an Internet connection it didn't include the two JS files needed for off-line mode.
Nicholas K. Dionysopoulos
Lead Developer and Director