1. A pic of a different wrestling move in the same video.
2. It's a torrent of different matches and I'm doing a screenshot for each video.

So it's not a similar images issue. Or rather it shouldn't be.

I suppose it's better to have too many pictures than none at all, but after seeing a zillion frame grabs, I don't need to download the video.

I can't speak for other staff, but when I do picture approval, I reject nearly identical pictures. Say, the only difference between 2 pictures is a slight difference in the hand position, I'll keep the one I like best and reject the other.

Of course, identical pictures are rejected, keeping the 1st one.

I also reject tiny pictures that are so small I need a microscope to see it.