To me Ryokugyu and Fujitora are the exact same level, both were called powerhouse, both are from the draft. But it's easier for Oda to make Ryokugyu look good because Ryokugyu will pick fights, while Fujitora only fight when he has to, and isn't the type to use more power than needed against people weaker than him.
Let's not forget Ryokugyu didn't want to fuck with with Fuji in spite of Akainu ordering GB to force Fujitora out of Marijoa.