Minos Against Emlyn 1
Hearing Emlyn's question, Minos paused for a moment to ponder such a thing. 'Hmm, if she hadn't leveled up recently, I would have been able to have a good fight with her...'
'However, now that Emlyn is at level 51, it will be much harder for me. Not only is her spiritual strength strong enough to ignore most of my techniques, but her physical prowess is far greater than mine.'
Minos could fight a human that using mostly Blue-grade techniques and some Black-grade ones at level 51. However, as a spiritual beast, Emlyn didn't have to deal with spiritual conversion issues.
Her cultivation converted 100% during a fight, and her prowess would be similar to cultivators using Silver-grade techniques. At least, that was her limit at the time...