The problem is everybody's definition of better differs, yes FF has is advantages but that doesn't mean its better for certain people/photography ........ I have seen the
output of various camera's on Flickr etc and the gap between some systems isn't big enough to justify the increase outlay.
I have seen some stunning photography taken on the new iPhone 7S with the defocussing software addition..... now compare that with say a FF body..... is the photo from the FF body really worth the extra £2000-3000 over the iPhone7S photo?
So the choice is yours.....
One problem for me is that I just don't know how I'm suppose to judge anything on line.
I could be looking at pictures taken by people with a lot of skill and vision who take pictures with an iPhone that'll shame anything posted in this thread and I could at the same time be looking at something which would show obvious weaknesses if viewed at anything other than the 600 pixel wide image I see on line. I'm much happier judging quality if I can download the picture and look at it on my own pc, preferably a raw so I can see what I can do with it rather than judge a picture which might have been processed by someone using processing Voodoo I don't possess.
Sometimes when I've been disappointed with kit I've Googled my way to pictures taken with the same kit and quickly realised that the problem isn't the kit, it's me. And conversely I've seen an awful lot of over or under exposed over saturated boring subject meh being cooed over on line (I'm looking at you, Leica owners! and others too...) but that's another issue.
There was a guy who did a comparison between an iPhone and a DSLR...
https://fstoppers.com/originals/we-compared-iphone-7-plus-camera-nikon-dslr-149423
I haven't seen anything from any camera phone that stands up to close scrutiny and of course we don't have to look at pictures like that but we do otherwise we'd all be using iphones. For example I found a print I'd done a few years ago and forgotten about. It was taken with a Medion compact which is the second worst camera I've ever owned, the worst being a keychain camera from years ago when such things were utter rubbish, anyway, I'd cropped it and printed it so that it filled an A4 sheet and it looks lovely but look at it under a magnifying glass and it suffers and look at it at 100% on screen and it's crap. Push things a bit more by shooting in low light, boosting the exposure post capture or printing or viewing big and the differences in kit and file quality tend to show more.
This might not matter. But it might. If it matters there are only a few cameras that can match or better the quality I can get from my A7 and most of them are bigger and heavier. So, with an A7 I can take a picture of my GF and family and know that I couldn't do significantly better with any other kit of the same never mind less bulk and weight and that matters to me as there may be a time when I'll wish that I had better pictures and indeed it's happened. Other factors for me are enjoying taking and processing pictures that are less important like day out walking with my camera shots and being able to use old manual lenses at their original field of view. These are less important but I like doing them as it's a hobby. For all of these reasons the A7 series is at the moment unmatched for me as nothing else does all of these things. MFT is faster but doesn't give me the drool over file quality, Fuji is old timey camera porn but wont give me the file quality and gives me no saving in bulk, the A6xxx series are compact but again being APS-C wont match the A7's file quality and the Leica interchangeable lens cameras are more than I'm willing to pay and of none of these other than the Leica allow me to use manual lenses at their original FoV.
FF files are just better than those you get from smaller formats if you want to go looking for the differences and that was something I thought about before buying into the A7. I realise that MF would be better again but with that comes bulk and more expense than I see as defendable to myself so in my world a FF DSLR is the best blend of quality and portability and there aren't too many CSC FF cameras.
Other people have other priorities rather than file quality and compactness such as taking pictures of fast moving objects and I'd guess that the A7's aren't the best for that but luckily I don't care

We all have to set our own priorities and for me they're quality and being able to use manual lenses in a small form factor so I'm stuck with Sony but as I'm pretty brand agnostic I could have been stuck with Nikon or Fuji if they'd got there first but they didn't Sony did
PS.
Hope you like the thread title. I change it back later but thought it would be a giggle for now
