The value of the Bismarck was that it took the entire British fleet to locate them. A relatively modest number of aircraft cut her speed before surface ships caught up with her.
The location of the Yamato was never in doubt. We had complete air superiority and lost visual contact with the Yamato only at brief intervals from when it left port at Tokuyama.
It was under continuous attack from three carrier groups whereas the Bismarck was merely slown down by attacks from a single carrier, the Ark Royal which allowed surface ships led by the Battleship King George V to finally overtake the Bismarck and finish it off.
Biplanes trashed the Bismark. It would not have lasted 20 minutes against what the Yamato got hit by.
She was a sitting duck for KGV and Rodney when they arrived.