Yes, many of you correctly guessed which phone is which. The wide-angle lens of the Xperia Z5 proved to be a dead giveaway.
If people are able to guess which photo goes with which device before they vote, the vote is rendered useless. On the same site, they had a survey where they asked their readers which of those three phones they prefer....surprise surprise, the order of the finish came out the same as their "blind" photo survey.
If they were really interested in a blind survey, they need to do a few things...
-They need more phones in the comparison. I would shoot for at least 5.
-They should not tell the people voting which devices are being compared.
-A particular devices photos should NOT be presented in the same order with each picture. In other words, the Galaxy should not always be the first photo presented. The presentation order should be randomized with each new picture subject.
-Finally, there should be no way to tell by looking at a photo's physical characteristics, which device was used. Each picture should have the exact same number of pixels and aspect ratio. Yes, that may involve some altering of the photos but it shouldn't be significant enough to affect picture quality.
Since such a test requires work and careful planning. I doubt many websites would bother. Most are in "shovel out the crap article as fast as possible" mode to their sites.
-KeithP