Your points are correct, especially the first: This team was constructed for ladder play. Of course, I cannot speak for Ultimate Champion, but I think it is highly unlikely that he will continue to use this team/play this metagame, and as such, the chance that he will continue modifying this...
OK actual prediction time:
Soviet Skymins (7) vs DaReal Drizzlers (1)
ORAS Ubers: Haunted Diamond vs Destiny Device
ORAS Ubers: Steve Angello vs New Breed
ORAS Ubers: KratosMana vs Mega-Swampert
BW2 Ubers: -Tsunami- vs dice
BW2 Ubers: ZoroDark vs Heatedline
DPP Ubers: reyscarface vs Jirachee...