Just some random math and theorycrafting, since this post had me thinking about the conversion.
IF you have a single hero at paragon 100 and have accumulated no other paragon experience, youraccumulated total experience would accrue to a 116 paragon level, meaning you would have 116 points to spend. This means, if you forego the Core category fields initially, you could fully cap two categories from any of the fields in the Offense, Defense, or Utility trees. This is equivalent to having capped ~17% of the Offense/Defense/Utility trees (as these, unlike Core stats, clearly will have caps)
That was a long post of completly wrong info. You can't max out any category with 50 paragon levels. You should read on how it works, especaially before writing such a long post. You can only spend 1 point every 4 levels into a category. Paragon1 would go into base stats, Paragon2 would net you a point into another page, etc. They announced this, and it is to stop people from just maxing out 1 page first.