The achievement isn't to have a one to one copy of VHS. Because this would mean lots of blur and a very tiny resolution. There also is not THE one and only VHS effect because there are lots of variations from noisy to blurred, destroyed tape, bad signal and so on.
Its just that the side effects can be used to make videos more interesting and less boring. And you could use it to recreate VHS very close. (If needed!)
So everything is fine.