Someone stole my assets - need your serious opinion

I came upon this project browsing through videohive:
https://videohive.net/item/trailer/19378400

Very closely resembles the effect i did in my own project:

The more I looked at it, the more I became certain this person stole my assets

Just take a look at the orange particles, and then the fog particles as well. Also its the exact same movement. I’m 100% sure this guy used my assets.

Now from what I know, that’s illegal to do. Should I file a DMCA copyright notice? Please tell me what you guys think.
ALSO, if this is true, I suggest everyone take a look at this person’s portfolio and make sure he didnt steal your work!