Shiki is still cooler though.
Plus (I forgot to make note of this before), not to mention Shiki's harem accomplishments are immensely more valuable than Shirou's, having banged his adoptive sister, his maids, a Burial Agent, the Princess of the True Ancestors, his loli familiar, potentially his alchemist friend, potentially his schoolmate vampire friend, and potentially even his TEACHER, and that's not counting the nurse of the branch family that shows up in that doujin claiming to have his first time. XD