That ninja grandpa ain't even around, He's always asleep or something
Hell, BANE one beat him in chess! He's literally dumber than a pile of muscles!

that was probably just some kids cartoon

You know that bane is a tactical genius and spent his childhood in a cell for his fathers crimes

and ras al ghul has beat batman before

Interesting, Because if I racall, Leonardo beat him aswell!
And he only knows ninjutsu! Batman knows wat more martial arts than that!