Depends on the type of knowledge. Bumi may have the superior knowledge when it comes to traditional human earth bending, while Toph learned earthbending from the original benders, giving her a very deep understanding of the element itself and her blindness even enhances her connection to it, being that she is basically earthbending 24/7 in order to see anything.
He says he uses the three seasons of Avatar to determine this fight, and yet we don't give Toph the win via metal bending and seismic sense? Ok
Bumi also has superior knowledge compared to Toph being as he’s older and wiser
What about Old Toph vs Old Bumi
or Young Bumi vs Young Toph
Depends on the type of knowledge. Bumi may have the superior knowledge when it comes to traditional human earth bending, while Toph learned earthbending from the original benders, giving her a very deep understanding of the element itself and her blindness even enhances her connection to it, being that she is basically earthbending 24/7 in order to see anything.
They did actually fight and it was a draw.