I don't have sims specific for them available, but it also just comes down to talents taken. Being that these guides are for pre-patch, you would generally prefer Blood Elf for the 1% Critical Strike but Night Elf during the night time would be better for a Raid setup.
Come Dragonflight with Know Your Enemy talented, Always play Blood Elf. It is an extremely minor dps difference however being that both specs are a choice at 1% of a stat as their racial for dps, and even then they have the same stat 12 hours of the day.