And when i say worst , I mean: trolled , terrible , illogical , poor executed etc .....however you wanna call it . Poll coming ..............................
Edit: Oh yeah Deidara ,, He got trolled hard,, Sasuke was out of chakra and he summoned Manda , None other snake But Manda,, And survived,, Deidara's death wasted,
Kakuzu : it was Kishi's way to say "look at Naruto's new jutsu" to troll an ancient/experienced/mighty shinobi with sick/bizzar abilities :yeah:
Sasori : this one hurts the most, the man that took on a nation, uses an extremely powerful previous kage's jutsu (iron sand), cunning/lethal attacks thanks to his poison yet he lost to Sakura and an old lady (not underestimating chyo, she's is very strong but, that's not enough).
the biggest question i have in Sasori's case/probably the biggest one in the whole series is, what kind of nation did he take on ?? who did he fight ?? ............. SMURFS ?? dude even if they weren't shinobi's, taking on a nation ALONE is quite the feat/massive.
Sasori - This heartless villain who had slaughtered a country suddenly got soft and decided to allow his grandmother to kill him, the same grandmother that he had talked about turning into a puppet before.
Nagato - Same as above, a heartless villain who suddenly got soft for some reason. It makes it look like everything he did was on nothing more than a whim.
Team Dosu - Every death of the members of this team was flat out unnecessary, and resulted in three characters with a lot of potential being killed for no reason at all.
There are more, but these were the first to come to mind.
.Kakazu only lost because Naruto jut had to show his new tech , someone who fought Hashi , survived & has been around longer than any of the people he was fighting + knowledge & shit load of experience , lost to a foolish trick , they were better ways they cold have done that .
.Sasori : Same reason as @Raijin.
.Didn't had any problems with any other deaths just this two , the rest are fine .