Well I think your comment sums it up perfectly: not too long ago, EK F was pretty much regarded the world over as the "best" - a simple internet search will confirm that.
But, people being the terrible things we are, are fickle. What did EK do wrong? What changed? Or did we just "tire" of them?
Interestingly, the airlines you mention above - especially the European ones - didn't even get a mention 5 years ago. The top 10 was pretty much dominated for a decade by Mid Eastern and Asian airlines... the traditional anglo airlines that essentially invented air travel had vanished altogether from that list. But I too have noticed their return.... recent reviews have put LH, LX and AF at the top - and I ask you honestly - have you actually flown them? I haven't - and I was surprised to see the sudden reappearance in the list. AF has a terrible reputation and its staff are always on strike and the future of the airline often seems uncertain, which makes it so unlikely to have the best anything, right? Which made me think - is this a thing? Are we actually seeing the come back of European airlines? When for so long we have experienced the excellence of Asian (and more recently) Mid east airlines? I mean - Swiss Air? What kind of network do they have? Who transits through Zurich? What kind of infrastructure at a Swiss airport could even rival HKG or DXB??? Once again - I have not flown them - but a quick analysis of fleet size and number of routes makes having the best of anything a strange business proposition, right?
Maybe some random one-off flight on AF's new F in the select fleet of 777 it operates on was good (and I am planning to do that next year!). But, as far as a consistent product goes, on an entire fleet of A380, EK seems to be doing OK for me - at least on the 12 or times I have flown it. Anyway, one of the gurus of airline reviews most recently put EK's new 777 first as best.... so I guess it is all just a matter of taste