It was powered by only Naruto.It's not his Rasengan, it was powered by Naruto and Sasuke, he just moved it.
Even Tenten and Kiba did such a feat in the war arc. :lol
No the difference between what Ten Ten and the rest of the k11 did was, they were granted a Rasengan. Boruto/Naruto performed the same feat as Minato/Naruto in the war.
It's two different processes, they had to work together, and he had to hold the chakra. Overall it was Naruto doing the work when it came to chakra transferring his into Boruto's Rasengan.