Yeah, I wonder why Sengoku summoned all three Admirals, all seven Shichinukais to face one half dead 71 year old, out of prime, missing 3 powerful crew members (Ace, Blackbeard, Tach) Yonko?
And he still wasn't sure whether they will win the war or not.
Without Shichinukais they don't even have enough man power.
One piece fans: 4 Yonko=The Marines
Whitebeard and Shanks clash they split the skies.
When Akainu and Whitebeard clash, nothing happens.
Don't get me wrong, I'm not downplaying the Admirals, they are definitely very strong, no doubt about it, but narratively, Oda always portrayed Yonko>Admirals, even if the gap is small.