Same Level Railroad Guns with differing stats

did you capture one that was building from a state that had a different doctrine?

I thought of that but the attack values don't differ by doctrine. Based on the wiki at least: DOCTRINES - Call of War Wiki

"Each Doctrine has a main focus with general strengths and weaknesses, which are applied to all units of that Doctrine. Furthermore certain iconic units of each Doctrine gain additional advantages or disadvantages, which are added on top of the general strengths and weaknesses (note: The percentage values are added up before they are applied to a unit)" The math works out that one was captured from a state that is not axis doctrine.

Terrain buffs?

In the picture they are in the same place, either a worthless edited photo or a real bug.

Nevermind it was a captured/revolted unit.

The one with 20 Hp is Allied doctrine

@freezy

Maybe an update to the game?

@freezy

Nah it's fine, I just captured a city with a secret lab that was manufacturing them.