That would put Toni’s standing reach at 8.5 inches more than Rivera’s. There is definitely going to be an inch or two variation in either direction.
If Toni is 6’8 (80 inches) and his standing reach is 1.33 times his height, then his standing reach would be 8 feet 10.4 inches (106.4 inches). If he jumped and touched 11 feet 9 inches (141 inches), then that makes his vertical on that 34.6 inches.
Using the same calculations on Rivera:
Height: 73.5 inches
Standing Reach: 97.75 inches
Height Touched: 144 inches
Vertical Leap: 46.25 inches
Claimed Vertical Leap: 50 inches
So, they’re either fudging on his height or his vertical… or more likely he has fairly short arms compared to average (1.28 times his height instead of 1.33).
If Toni’s arms are comparably shorter than the average quoted in that article, then that raises the vertical leap on that jump to 38.7 inches.
I would revise my guess on that vertical (assuming the setup is standard like it appears to be) to be somewhere in the 34-39 inch range.