just as with the XP1000 when they released the video, the machine had not been introduced yet, there were no aftermarket parts available yet, nobody had been into the XP1000 engine, there were no clutch kits available, there was nothing available to allow them to have a super awesome build.
same with this setup. the XP-T is brand new, when they built this machine i assume last month, because they were shooting the last week or so, the machine was so new, all you could buy for it was a cage and suspension. the engine and trans and clutches were all brand new. EVO hadnt released a flash yet, Queen still didnt even have a machine yet, there just werent any parts available to make the machine cool and fast and fun. the new clutches are so new, there are no springs or weights available, there were no cool upgrades to the engine. there is no way to make a super cool bad Ace ride with a machine that hasnt been released because there is no aftermarket company that had seen one or had one at the time they cooked up this idea and built this machine.
in the XP1K vid they used all XP900 parts, engine and drivetrain.
in the XP1K2 vid they used all XP1000 parts because there was an aftermarket available
in this XPT vid they used all XP1000 parts because there wasnt anything available for the XP-T yet. the cool billet clutches they are using.... not available for the XP-T yet. the cool aftermarket intake and turbo system..... not available for XP-T as of the build. just no way to build a machine when nobody has had their hands on one to make aftermarket parts. better to use something everybody knows and can make parts for.
thats just my thoughts on the situation.