Maybe one has to take the weather and the whole of all stages into account, factors like the fast beginnings...
you could make a serious weather argument about pogacar, remember tirreno? terrible,cold day he almost caught Mvdp after he attacked and completely destroyed van aert, both riders who should be relatively well equiped to handle cold weather being CX who often perform in snow and rain
and about the low numbers, the only guy who i expected a lot more from is Carapaz, do i think Pogacar is 5 minutes better under normal circumstances than Kelderman,Uran,Vingegaard? absolutely ... but carapaz should be better, you have to question his performance so far, two pointless long(er) range attacks,caught both time, very meh so far
so there are few questions like "do the fast starts in stages benefit pogacar?" - he is very good classics rider, already showed he can recover really well, so while overall racing might be faster, its not causing him as much damage as it does to others (which would also support the good doctor saying he is not pushing better numbers than last year), "is the combination of fast racing and bad weather the absolutely perfect condition for pogacar, while others suffer either from one or another - hence 5,8w/kg"
it looks to me like his first place overall isnt a surprise to anyone, 5 minutes especially on carapaz is, so lets see how spanish warm weather in pyrenees either support or dismiss the theory that pogacar is doing his own thing while others are clowning