I've never claimed otherwise. OIS can and do make a difference under certain conditions, especially when blown up, and should in theory allow you to hand-hold the phone at reduced shutter speed. However, some of the examples are simply invalid for comparison purposes. E.g., the candle flame in the iPhone 6+ photo is brighter, and we know more light leads to less noise. Don't fool yourself into thinking the reduced noise is from OIS.
Maybe the lighter is perceived to be brighter/ bigger because the lens is actually opening up longer to facilitate the light?
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