What do reviewers actually mean when they say the paper sound more like a technical report? [D]

Hello,

I recently got my paper rejected from a workshop (big womp :'( ) .

Both reviewers said the paper sounds more like a technical report than a research paper.
I followed the usual computer vision format for papers so I'm a bit confused by what that might actually mean.

I would therefore like to hear the community's opinion on what faux pas make a paper read as technical report.

Thank you