Performance and Nashbar, and Supergo at the end were all owned by the same company. Obviously, Supergo and Nashbar were started independently, but they are now part of the same parent company, or at least were.

Whether the frame said Access, Scattante, Performance etc. if the price point of the frame was decent the frame was decent. You have to remember unless you're talking a Calfee carbon, or Litespeed/Merlin/Lynsky titanium, or Klein/Cannondale for aluminum most stuff is just everything else. My Access 23" 29er is every bit an amazing frame. Its not as light as my Cannondale M2000 26" bike, but its also from a different era of big suspension and everyone hitting everything harder. The worst part of the bike is NOT the frame. I hate the hydraulic brakes, the plasticky X9 components, but the bike came with Mavic 29er Crossmax wheels and a Reba fork. Taiwanese factories aren't just limited to producing frames for a single nameplate. Cheap house brand gets made on the same production line as expensive nameplates. Many frame brands now are just branding. There is nothing about that brand that actually built the frame. We just don't know and can't pronounce the factory that did.

The days of craftsmen in Chehalis, WA or Bedford, PA building bikes in house are over. For crying out loud most Rivendell's are either a Mark Nobillette or a Waterford. What makes it "a Rivendell" their lugs and paint? There are times where the frame/forks at Nashbar get stupid cheap. However, I think you can always find a better nameplate bike on Craigslist just the same if you are patient enough.