Is Сверхъестественное like buffy?

There are similarities and differences:
The main similarity is the genre. Both are about people who fight Сверхъестественное monsters. However, in Supernatural, characters with various powers/supernatural strengths are еще likely to be villains (or there's a catch to the power), while in Buffy she's got her Slayer strength, Willow becomes a witch etc. Buffy also has еще female characters and the characters in Сверхъестественное are older so Ты don't get the high school drama included.