Amazon calculates a product's star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers and factors that establish reviewer trustworthiness.
DSLR quality always depends on both body and lens. Camerabody autofocus is great specially in the video. Easy to shoot cinematic videos as autofocus is too smooth. Coming to the lens it is just kit lens with aperture starting at 4, so don't expect razor-sharp image indoor. Up to 800 ISO, there is no visible noise. At 1600 ISO you will see little noise if you view in 100% the actual size of the photo. For 4x6 or 5x7 it will not noticeable. Just buy an additional lens, like 50 mm, and you will get awesome indoor and low light photos and videos. Camera is great in this price range. IF you have photographic or video graphic hobby then go for it without second thought