Who can 1v1 a fed Brawler like say Udyr? Who can 1v1 a fed mid squishy like say Zyra

So say a Fed Udyr/Olof ect running in the jungle runs into X

Assuming X is also fed who can win the 1v1?

Now same example but with fed Zyra/Ziggs ect (squishy Mage)