Again problems with IU info, culverin deals more damage to camel gathlings that shown on IU, why?

[Hsiman4096]

Culverin do have hidden extra bonus to Gatling Camel, which is 4x.
So one Culverin shot to Gatling Camel will deal 40x4(Artillery Tag)x0.5(Cavalry Tag)x4(Gatling Camel)=320
You can check this in protoy.xml