It's still beta (i.e., slightly buggy) I think.
I did their suggested Pepsi video search[1], then picked a lower ranked YouTube video titled "GiveMeNews"[2] where it claims that "61% of your video was found here".
But that video consists a single frozen frame from the Pepsi ad and someone talking for a couple minutes. One frame isn't 61% of the video.
[1] https://dashboard.spotter.tech/reports/1?platform=youtube