listen, I shot features on (almost) every pro digital camera since 2008. I've compared them hundred times. discussed with my collages even more.
the difference is huge, I or any professional eye can tell picture was shot on film or digital. Because the difference is like looking at painting on a monitor vs real canvas.
and its same story with digital projection. its just like huge tv.
fact is we have to use the digital because it's cheaper, faster, easier. but not better, not even close. remember my words in 10 years from now. when we have 16k-32k cameras and projectors and still you would say they are same.
bigger pixel means worse sensor. technically comparing alexa sensor to f65 is comparing fiat to bmw. This is why sony didn't produced a new sensor yet, because it's still best digital sensor in world. ARRI has won with 100 years of experience. They know what cinematoraphers want, they had that network already. sony is making all pro sensors of world alexa sensor or even iphone sensor.
but where they lost; comfort of cinematographer, simplicity of workflow and PR.
they are not planning any upgrade to F65 yet. I think they won't till someone else (probably its gonna be red) outstrip them.