That particular antenna is manufactured by Qiaohua (
http://www.qiaohua.com/products/av-24uv.htm), the same company that manufactures private label antennas for Solid Signal, MCM, Parts Express, Digiwave, and others. Their sales rep called on us several years ago trying to get us to sell their line. Their main selling point was that they could do everything cheaper.
I would expect minimal performance difference between the new antenna and the RCA. You'd likely need lab gear to find any discernible difference.