PSABR is a sony exclusive that had a lot to bring to the table, high expectations and great responsibility was given to superbot over this. Thus people feel more inclined and justified to find flaws and bash this game. Think of it like having a little brother and a big brother. The big brother has people expecting a lot out of him more so than the little brother does because hes BIG brother. if superbot made a different game altogether I think people would bash it less or not be as motivated because it would be like a "little brother" game.
id say superbot did damn good for a brand new studio, to have such a stable online netcode with minimal lag. the glitches can easily be patched. the vita version can go toe to toe with the ps3 version i dont think thats been done yet by a brand new company. capcom did it but theyre CAPCOM! theyve been around 20+ years.