the difference between pld and war is the player using them and how well they were geared honestly. war had a higher starting point and a lower ceiling. a bad war was better than a bad pld. the pld took the top tanking spot when you looked at the top level of each job. a good skilled pld with good gear was much better than a good skilled war with good gear. the reason people usually asked for war is because unless the person was a good pld and was geared well then war was the safer choice. once people started learning how to play pld well and got their gear upgraded pld became the better choice.
low level gear and skill
War>>>>>Pld
great gear and skilled
Pld>>>>>>>>War
