If you really think about all there fights AFTER the first half of Part 1.. They really don't follow any more fundamentals.
They both are quick to charge in without thinking...
Both are more concerned with using OP jutsu rather than tactical attacks
Both are arrogant until proven otherwise
They both have Perfect Plot Shield which judging by feats is more powerful than Yata and Perfect susanoo that FTGs combined.
MY point? It's sad that a show about ninjas have two main characters like stealth and tactics