Is iPhone 5 Camera Not Better Than iPhone 4S ?

People after using iphone 5 they are not satisfied with camera quality they complaining the picture flare shows purple tone when the light passes through the lens or also a bad quality in daylight
how apple is irresponsible for that 8 megapixels camera quality as you see on the pictures taken from apple iphone 4s and iphone 5 for the comparison you can see there difference
Recently we heard the news that apple said, if your photo have a purple flare, this is totally normal behavior of the iphone 5's camera you are just holding it wrong.