Luke had learned a lot of partially available abilities. Some were not as practical as this Yo-Yo, and this had to do with restrictions on the abilities.
For example, the original version of Pheromone Control could be used on both men and women, but Luke's version could only work on women, which was a 50% discount.
The original version of Stacy's Elementary Replication copied the body, memories, and abilities at the genetic level, while Luke's version could only copy the body.
At the very least, however, the flaws of the original version weren't present, so this could be considered a 20% discount.
This time, Luke's version of the Yo-Yo ability wasn't cut down to 50% or 20%, but involved 'cut' bones — and crushed to powder, to boot.
The original Yo-Yo ability which Big Dipper had personally seen for himself was almost as fast as Pietro.
