I found a transmission curve for the ZWO 1.25inch UV/IR filter which in all likelihood is identical to yours. Try to compare it with similar data from your other filter.....
https://astronomy-imaging-camera.com...dow-graph1.jpg
Edit...
Surprisingly to me the Badder uv/ir filter, by way of example, shows significantly higher transmission in the visible band ~98% compared with my eyeballed average of around 93% for the ZWO uv/ir filter. If one can rely on manufacturer's data to discern such a difference that is. There's no substitute in testing your own.
https://www.baader-planetarium.com/e...-l-filter.html
Best
JA