Shiki never tried to topple either? He tried to work alongside Roger and when the two couldn’t, they fought to a draw. That’s literally equality.
Shiki is alike WB and Roger. However, he retired before the great pirate era. Trying to dilute him to “yonko level” is so disingenuous as the Yonko are just those chasing Roger’s legacy, Shiki never did so. He matched Roger and fought for a different dream.
Idk why Shiki hurts you so much
		
		
	 
 Shiki is aiming for supremacy that's a fact.
He also says to WB that Roger is a great wall to both of them.
WB was the one that never care to topple Roger or anybody.
Shiki is exactly the way you describe Yonko lvl,
Top pirate aiming for supremacy, building an army and fails to topple Roger or WB even though he tries, and was not remembered as a gold medalist like Roger and WB.
Praise Roger and respect his strength like the Yonkos. Etc