For water farming, u need a gd archer (lvl 130) with good SDG equipment to plvl. In order to plvl water faster, u again require good SRG equipment. These would cost u alot and longer to acquire these items.
For warr, u need at least elite items with +3 onwards, a good super 2soc 2h weapon and you can lvl up pretty fast, thanks to superman. These items is cheaper and easier to obtain.
if you are looking at the speed on plvling water tao and lvling warr, a full soc SDG archer with full soc SRG water tao is definitely faster. should take around 2 days of plvling. Of course, u have to queue and fight with people for spawn for plvling
For a warr with full soc SDG/SRG, should take around 4 days of lvling. there are plenty spawn for lvling on your own.
reborning at lvl 120, u can choose to bless any of the items for warr while water tao at lvl 110, u can only bless weapon/boot.
Hope it answer ur qns