BPRD is a little different from most fictional organisations in that they don't really keep the paranormal a secret, they just investigate and neutralise threats.
They're also unique in that the things they go up against are capable of destroying entire cities, and changing scores of people into monsters.
From what I've seen in the comics so far, I'd give them a solid 6/10.
Another organisation is the hellsing one, they go after vampires.

>>17829047
They rely too much on a few heavy hitters imo.

The original ghostbusters team seemed to get shit done, if you go by the cartoon they apparently fought cthulhu at one point and came out on top.

SCP foundation is overpowered mary sue bullshit to the point where they literally destroy and "reset" the universe every time they fuck up with no repercussions.

XCOM does pretty well against the aliens, they'd probably be able to take on most paranormal threats too since they've got psychics and access to the world's best science and technology along with great security and cooperation from the world's governments.

>>17829092
>SCP foundation is overpowered mary sue bullshit to the point where they literally destroy and "reset" the universe every time they fuck up with no repercussions.
None of it is canon though