Look, same van . they might live together or something.. They might be the girlfriends of them! How else would they have vans ( except renting ) HOW WOULD THEY KNOW WHAT KIND OF VAN TO USE ._.
IMO, i think the SMU one was wayy better, just because it takes more strength to do the foot version for a long time instead of just fist pumping. Plus, this isnt copying. If you actually knew their story, they wanted to create a different version by just using their feet instead of their upperbody.