Maybe it's different with the sub but there were glaring errors with the audio- and even some worse ones with the animation that I just couldn't get past. Scenes were completely altered in some cases. For scenes that were already done in the original series I don't see a reason why they couldn't match up. I'll watch the next part when it comes out just because my husband wants to - but I'm not expecting anything short of more irritation. Other than that issue I'm giving 7/10 stars just because I'm a fan of SAO and the art was still lovely. If they changed anything else I don't think I would be rating it as highly.
