No. They don't. This is a fanbase where peoplethink Roger and WB can mid dif admirals and that dead-ish WB almost killed Akainu while ignoring Akainu's performance after the quake punches.
I came to that conclusion from reading the ENITRE marineford arc. One yonkou, their crew, allies and territories equals to a small nation. The 4 of them together equal an entire country of overpowered freaks. The MARINES, not the WG, are equal to the 4 yonkous combinmed forces. The marines dominated the force of one yonkou. No marine top tier was beaten in marineford and the shichibukais were more of a hindrance.
Four Yonkos can Crush the whole Marine plus Warlords, by the way did u hear Ivankov comment, when he thought Ace was Dragon Son, he basically said, are the Marine stupid enough to take on Dragon and whitebeard the same time, and again, the moment when Shanks arrived all the marine showed Fear, even Akainu Lost the will to fight, becouse they Knew they would not win that fight.
We all know that Akainu at marineford was the strongest Admiral, as he showed great endurance, he basically took on all Whitebeard commanders, but the moment Shanks arrive, he lost the will to take on him as well.
So One Yonko is close to strength with the whole Marineford HQ, if the Warlord was not present at Marineford, I basically believe all of the Admirals will have been wounded, commanders of whitebeard ship, some of em where fightin Worlards, Whitebeard lost that war becouse he was Basically the only one to be able to fight those Admirals, couse all his commanders dint focus on the fight, they got beat coz they where worried abt his health.