I did fail to inspect the rockers/shafts before purchase, and that’s on me. I couldn’t have seen that they were different ratios until I got my calipers on them, but in the end you’re right; I failed to inspect them on site. I trusted the seller.
I’m not sure about the ones you got, but all the ones I’ve seen, most of them have the ratio stamped into them somewhere. Or at least a part number. I know Crane does on there’s. Not sure about iskys