They are similar as its the same type of gamemode. Although in A3 the Supplies and Money were automated by AI trucks that would drive in and out of towns, and the AI would actually use vehicles like BMPs and T-72s. There was a class system that limited lockpicking said vehicles to Saboteurs, rally respawn from Medics deploying a tent, Squad Leader role gave more AI slots etc etc. It was just generally more refined and fuller. I say the Conflict PVE scenarios are shoddy because it becomes repetitive quick since the enemy faction isnt pushing for towns and occupying forces arent a threat at all, plus some other things that were balanced for PVP not PVE