My understanding is that AA guns work best against targets the size of a fighter or bomber. As the target shrinks, so do your odds of a hit.

Here's an Orlan-10 on its launch mount. Perspective means it appears larger than it actually is.

https://en.wikipedia.org/wiki/Orlan-10#/media/File:SlavicBro...

So, no, not perfect. Probably not even within an order of magnitude of the same effectiveness. Possibly not even two orders.