He has a great running vertical leap but when you factor in the top 10 & take into account their heights in real life marking contests, he doesn't win one of them.
Averaging out the top 10 - FOS gets beaten on average by 10.5cm per marking contest.
It's important to note that all things being equal and comparing 'apples with apples' he is the only pure midfielder who rated in the top 10 for the running vert.
Apples aren’t apples.
There’s arm length, handspan etc. Absolute reach. It varies wildly even with height.
It’s also only a main considering for defenders (spoil height) and marking tall forwards (absolute marking apex)