Ma Long Vs Zhang Jike Technique

Hello everyone here, 

Can everyone tell what they feel about technical difference in ma long and zhang jike’s game, in term of footwork, speed and spin generation mechanism, recovery etc.

Because both player’s game looks unique yet perfect and powerful. I just want to know what makes their game beautiful yet not quite same if we look. Both have same height(I search in google) yet I think ma long’s center of gravity is upper than ZJK’s. What this difference impart on the game. 

Ma Long plays like water, always flowing and flexible and zhang jike plays like mountain, always rooted balanced.   

Please consider fit ZJK at his peak and ML now.