Yes, AA and UA operate Flagship and International First Lounges but those are restricted to passengers who are traveling on revenue tickets in International First class only. AA/UA only allow their business class passengers complimentary Admiral/Red Carpet Club access. To pretend that business class and AA/UA's international first class product, which caters to a very small niche market, are one in the same is inaccurate to say the least.
I don't doubt there will be a degradation of the product as it relates to the food/drinks offered in the Club (relative to the Envoy Lounge offerings),
