While that solution is cool for preserving shape across all slices, it was clearly postulated by theoreticians.
An experimentalist would point out that pizza components have a radial dependence (Ie, crust on the outside), so it's not actually equal slicing in practice, and the traditional sector slices are really the most optimal ;-)
http://www.popsci.com/cut-better-slice-pizza-with-math
http://arxiv.org/pdf/1512.03794v1.pdf