RAY VS LOGAN...

He felt that the highest number of techniques that Logan could have mastered were three advanced realm skills, the space teleportation wasn't a graded technique since the range of the teleportation wasn't graded by the realm like other skills.

In essence, for the space element, someone with the space teleportation technique that was in the advanced realm could teleport a couple of ten meters, while someone in the master realm was able to teleport at most ten meters.

The gap in power between the mastery of the space elements of the advanced realm expert and the master realm expert could be vividly visualized, this was the main advantage the grade of an element possessed.

At this moment, he saw Logan use the 'second advanced realm skill' he could have mastered.

As Logan clasped his palm, he used the door of flame destruction technique that he had comprehended. 

Boom