advanced stats that at least attempt to measure it and they are about even for Kobe and Durant. In my mind you have two very good defenders, the advanced stats don't show a clear victor, so i give the nod to Durant based on his rim protection skills and the fact that at 7' he can defend every position on the floor.
when you have two good defenders, i don't really like going there because it is so hard to measure. i only went there here because Durant's shot blocking is substantial this year.