All right lets think kakashi and Genma are facing off.How does Genma use FTG??Using a seal or a kunai like minato.Kakashi knows about FTG cuz he was a student of minato.What does Genma know about kamui??Nothing.U guys talk like FTG is one hit kill.Genma doesn't use rasengan.So his FTG isn't as deadly as minato's.If you can really state how genma counter kamui i'll accept that he is>kakashi
Obito was minato student does that
mean he knows everything about FTG and he can beat him ?
He lost badly against minato and his kamui didn't help him either.
Kakashi's low stamina and his kamui can't beat genma's FTG.
the fight isn't easy for genma either and if genma doesn't have
Screentime doesn't mean he's not strong .
In war arc .
Genma defeated black zetsu and 2nd tsuchikage and he didn't
Find any difficulties either.