Current chapter show the Edo Minato senjutsu resengan (not the normal resengan) was kick by Madara to Kakashi stomach.Kakashi was exhausted from overusing his kamui and fighting so long in the war arc and he did not get kill by this full force attack.
Similarly ,there are many instances where resengan donot kill their oponents.For example Naruto vs Kabuto (part 1),Naruto vs Obito (part 2),Minato vs Obito/tobi in the past etc.
So it clear to you guys that chidori is better than resengan because it a piercing/jab which the lightning nature sharpen the attack and stun the opponent when it inside the opponent body.
Hater will always hate(I cannot link picture to support my view atm,but you guys know the manga enough to understand my point)
Similarly ,there are many instances where resengan donot kill their oponents.For example Naruto vs Kabuto (part 1),Naruto vs Obito (part 2),Minato vs Obito/tobi in the past etc.
So it clear to you guys that chidori is better than resengan because it a piercing/jab which the lightning nature sharpen the attack and stun the opponent when it inside the opponent body.
Hater will always hate(I cannot link picture to support my view atm,but you guys know the manga enough to understand my point)