I did apply your advice globally, but also using comments to verify. Yes, many complain about Amazon's nilly-willy mismatching of comments to "related products". They now seem to be adding the titles of the original products from where the comments came, which is a help.
So, is your above link the actual name of the seller "CVID", from who you found a working splitter? No point throwing away money on one without the full functionality they suggest -- Blu-ray, PS3, etc.