Hayate vs Baki
It was literally the ONLY time the flak jacket ever stopped an attack. But that's only the beginning.
Shortly after people are getting killed as they throw kunai into the same jacket. HOW THE HELL can Hayate's SWORD that comes down from a high angle (giving both force and momentum) not do what mere Kunai can.
Dosu vs Gaara
WHYYYYYYYYYY DOSU WAS EPIC!
Naruto vs Kakuzu
Because yes the man with the most combat experience and enough raw experience to both survive Hashirama and thrash Kakashi would totally fall for the same tactic TWICE IN A ROW...not to mention fall for a Bunshin feint in the first place.
Sasuke vs Deidara
Throw Deidara against a supereior element. And even when he's virtually won...have Sasuke pull chakra from nowhere, and then have Suigetsu conveniently summon them away at the last possible second.
Kinkaku/Ginkaku vs Darui
OH MY GOD! Darui is defeated and suddenly his spirit word changes?! Not only did he not say "Sorry" out loud, but furthermore if a sealing process is being conducted does it really stop just because the word changes?! That's like drawing Nagato into the Totsuka and suddenly summons himself away while being absorbed. Then of course Darui ends up owning, and with that people downplay the Gold & Silver....and consequentially Tobirama, the Kinkaku Force, and the Second Raikage.