Bachus I believe the Integra7 was on the design table first, even if the Jupiters hit the streets first..

Even though as you said the Integra7 has 64 studio sets at a time, you can load directly from the flash memory as many as you need.

The Integra7 is designed to use with a computer, as an audio and midi interface. It also has the editor as a VST for your DAW.

The Jupiter has the controls you mention, it is designed as a performance keyboard.

The apparent problem with both units could be polyphony, but there is no need to burden the instruments to get great results.