Actually the Orange Pi 5 Ultra would be the most recent board from Orange Pi to compare it with. You can see a comparison between the Orange Pi 5 Ultra and the Raspberry Pi 5 here: https://boilingsteam.com/orange-pi-5-ultra-review/

In a nutshell, this new Orange Pi 6 Plus is much faster than Orange Pi 5 Ultra and anything that came before.

Plus and ultra are almost identical with the exception of an HMDI in port on the latter. I've used the same HAL on both boards, they are effectively the same.