I'm often confused!
I'm fairly new at following MotoGP, and still learning.
You're correct I was thinking this was the same twin that they run in Superbikes.
I went to the Ducati site and found the following specs for the "GP6" engine.
"Desmosedici GP6
989 cc Liquid cooled
90 Degree v4
235 HP @ 16,500 RPM
100Nm (10.2 Kg) of torque @ 14,000 RPM"
Comments say the Desmosedici revs higher than any other Desmodromic engine.
Way cool!!!!