You only say that because you supported him.
We'll never know for sure but evidence suggests corbyn would've been worse. Look at the mess he was in just trying to appoint a shadow cabinet.
Corbyn proved to be a much worse party leader - labour was hugely divided for his entire time as leader.
Corbyn is a backbench MP, protest party rabble rouser who got the leadership through a quirk of the voting system.
And that's before you get to his policies that the majority don't want.
Corbyn is history