Corbin Burnes had way worse results but he flashed substantially more upside than Sproat has ever flashed. Just look at a comparison of the underlying numbers.
Burnes had a 3.37 xFIP, 21.3% K-BB, and 17.2% swinging strike rate in 2019.
Sproat not counting today had a 4.29 xFIP, 12.6% K-BB, and 10.3% swinging strike rate this year.
I know you said you aren't comparing them that deeply but I would caution people to think that just because Burnes turned it around that Sproat will also be able to do it. Sproat has significantly less skill to work with than Burnes did.