a 6.5k Medium Format Camera vs a 1.2k APS-C camera... the result is obvious.
Image has more resolution straight out of camera, to begin with, 8256 x 6192 vs 6000x4000. that is a LOT more pixels. Bigger sensor size also implies more total light gather for the same exposure, lower ISO, less total noise. Images will and DO look sharper and more detailed.
Micro contrast looks better, color rendition looks nicer and richer in general. Everything about the bigger camera says: This is a more capable tool.
There is nothing in the first picture that is better than in the second one, by no stretch of the criteria. Not even equal... the Medium format image is superior in every aspect. Ans while you may say, Hey, but those criteria are very subjective... I can assure you than out of 1000 people you may ask about these upwards of 950 will choose the GFx image.
I am as happy a owner of an X-T2 as one can be, an amazingly capable tool which is by no means a slouch and I feel is no compromise for what it offers. It can handle a professional shooting for sure. Not because I say so (I am merely a learning aficionado) but because I know a couple of working pros that use it and are happy with it, apart from the plethora of pros that attest to it´s capabilities online.
But to try and equate what an XT-2 can do to what a GFx 50s can is nonsensical. These are two different tools with two different goals in mind.
You have answered to every comment that differs from your opinion with yet another comeback trying to refutem which leads me to think you are heavily biased. From this it is possible to deduce you either own an XT2 and need to justify your purchase (as many a people do given any choice), or are looking to get one and need reassurance in your almost set decision.
There is no part in the fact that a Medium format, more expensive and capable of delivering more sophisticated images camera, which makes the XT2 a less valuable and awesome piece of hardware.
I would be thrilled to own an Audi R4, but I wouldn´t go saying, this is better than a ferrari F50...