"Certainly, this does not affirm it (the authenticity of the hadeeth)..."
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The Imaam of Hadeeth, the Shaykh - Muhammad Naasiruddeen al-Albaanee (rahima-hullaah) said:

“And the saying of some of the muhaddithoon (scholars of hadeeth) regarding some hadeeth:

((Its rijaal (male narrators) are those of the narrators of the Saheeh (al-Bukhaaree))), or:

((It’s rijaal are thiqaat)), or that which is similar, then these statements do not equate to the term:

((It’s isnaad (chain of narration) is saheeh))

...since this (statement) assumes the presence of all the conditions of authenticity (of a hadeeth) from which include: free of any defect, which is different from the first statement.

Certainly, this does not affirm it (the authenticity of the hadeeth), rather, it affirms just one condition and that is the uprightness of the rijaal. And with this, the authenticity (of the hadeeth) is not affirmed, as is not hidden (from the people of hadeeth).”

Tamaam al-Minnah – Page 26
ar-Rowdh ad-Daanee fil-Fawaa.id al-Hadeethiyyah