with your formula, Sony XZP > > Samsung S9 > Huawei P20

Jack not in same league but LDAC is,

while XZP have what you need, tech spec wise 4k HDR with triluminus (this depends, not sure sony or samsung have wider gamut) which can throw others miles away

Photo Rendering Algo i think due to business strategy dont want competite with RX100 series (you see rx100 photo quality you will know), quality wise i have nothing to say however white balance is top among competitors which make it still stay in the flagship list.

performance wise, check out youtube how performance for s835 in XZP compare to S9 series.

as you say there is no perfect phone, so how can you ignore Huawei that have its own selling point and ignore that they are also presenting flagship in the market.

for me im feeling that you thinking SAMSUNG >>>>> everything

what im trying to say is not XXX > YYY, ZZZ < AAA

sorry if im misunderstood, but just want to say that each famous phone maker have their own market to tackle, so no exact such thing who is best while who are not
even Vivo or OPPO have their own strategy now.

anywhere to play the real device now?