I noticed this but thought it wouldn't make any difference to the duplicate detection algorithm.

There is also some URL encoding difference:

https://odysee.com/@TraderUniversity:a/bitcoin-going-to-10-million-%28ecb%29:5?r=8T2xqWjtafHWYGxQBSsrbw1wQPm7sWRq vs https://odysee.com/@TraderUniversity:a/bitcoin-going-to-10-million-(ecb):5

See `(ecb)` vs `%28ecb%29`

Interesting, that doesn't usually seem to matter, but maybe it was the issue.

Undisciplined

bitcoin

Bitcoin Going To $10 Million (ECB)

I think your link contains a referral. r=8T2xqWjtafHWYGxQBSsrbw1wQPm7sWRq