You never stated any fact. You just said Sommers is Yonko level, without any justification. Can you at least make an argument instead of just making a statement?
I am not even trying to prove you wrong here.

It should be basic common sense blud.
- One of the Power which Subjugated the world 800 years ago.
- Omen buff made him Super Sommers
Zoro Scarred Kaidou with Ashura pre AdCoC.
- Post AdCoC, with King of Hell flying dragon blaze, Damage should be even further, In the least bit stronger than Ashura which Zoro used.
- Sommers literally blocked+deflected it like Imu did with Zoro King of Hell strike.
+ he is using Omen alongside the sword, Alternative to AdCoC.
So lets check his arsenal here,
- Omen, AdCoC Alternative
- Physical Stats to max, Thanks to Omen buffs
- one of the 19 great sword which subjugated the world.
- No clue if Omen buffed his fruit or not.
But this is already Yonkou level maxxing Stats.