This is the core reason Mondo is so good and getting better [from home-page-linked article]

“People have their own strengths and weaknesses. Piotr Lisek, for example, we are very different builds - we jump very differently so it’s fun to see things that work for him and things that work for me and trying to incorporate what he does in his jump into mine.”
He is the ultimate agglomeration of everyone else's strengths. His unique ability to mimic other vaulter's technical model allows him to pick and choose the best aspects of everyone else.