the essence of martial arts based mangas is the one VS one equal fights,the war arc hasn't any of these,it's basically a godlike figure powning others to the ground.most of the fights were rushed and sometimes overlooked(edo fights).
the madara VS kages was arguably boring,kages attack,madara uses susanoo to tank,that was the battle in a nutshell.some people may orgasm over seeing madara acting arrogant being a lame Alucard rip-off, but sure won't appreciate a one-sided battle because it's boring to the extreme.
tobi VS naruto & co was meh,not really good it has its ups and downs,but still got bored of them trying over and over to get past kamui.
uchiha bros VS kabuto was a troll,kabuto has a sh!tload of moves,he just kept showing his jutsu arsenal one after one without any intelligent combinations,and izanami completely ruined it,if kishi made them fight kabuto with killing intent and make him stop ET when he's at his weakest state it would have been way much better.
the allinace VS madara obito was complete troll,at first the alliance's cobined jutsus were able to push the juunbi and restrict it,then few chapters later they're struggling against a big fire jutsu despite being powered up,that's freaking awful writing.
not to mention obito's constant rin flashbacks are getting annoying after each week.
the only positive point about this war was the hashirama flashback.