haha there is a big difference in a war between entire villages and who was up until the start of war arc the strongest ninja encountered infiltrating and wrecking stuff up. Nagato had each of his paths infiltrating, each with an exceedingly powerful rinnegan tech which at the time was unknown to everyone. No and i repeat no 6 man squad from ANY of the villages could have infiltrated the barriers and done that kind of damage. That said, lightning has the best chance to me. Naruto and bee negate each other in my eyes, and A and tsunade (please no flaming) counter each other to me, at least after madaras admission that she was slightly slower than A but vastly stronger. Having said that, i tip the scale to konoha though because of the numbers game, while their armies may be equal, if gai got serious, i see him going 7th gate, and his techs at that level could massacre hundreds upon hundreds of lightning village troops before he either burnt himself out or was downed by multiple hero level ninja from the village. Of course this is a biased topic from the start, because given that konoha is the home village of naruto, the main character, its obvious we know the tremendous feats and power of the konoha elite shinobi (gai, kakashi, the anbu, etc.) whereas up until recently in the war arc we knew relatively nothing of the elite ninja from the other villages save for the akatsuki who came from elsewhere and the hype of the 7 swordsmen...other than them very few were named in great detail of their power, and because of that unless we had better details on these high ranking ninja, we can only assume that the konoha elite would beat them, and the low ranks are inconsequential because fodder ninja are just meat shields in naruto regardless of which village crest they wear.