Probably not much cause it'd look like гоогle.com or something else silly. The Cyrillic g character would stand out and most Russians would go to yandex before Google so accidental Russian traffic would be barely worth the effort. The print form of cyrillic that would be used in browsers just doesn't have a character to make the domain worth anything.

The vowels on the other hand look the same. ОO, eе, аa.