I think that's a silly point. That was placed in there simply for comic relief, there are so many events in the manga that show a decent level of battle strategy and you're choosing one isolated occasion, one that everyone uses anyway? The databook from early part 2 gives him a 3 so I'd say he's a 3.5 or maybe even a 4 now.-He just figured out nagato can absorb ninjutsu and still made the same mistake.You must be registered for see images
-Accepts himself as a moron.
-wanted to learn rinnegan techniques without rinnegan.
Konohamaru seems more intelligent to me.
I would give him about 2 in intelligence.