More icetime against terrible players makes a massive difference. There is a reason coaches in the NHL line match so hard.
Hughes seeing 33% of his icetime vs the other teams bad players vs Makar at 25% is a big, big swing when it comes to possession numbers. Then You have Makar at 34% vs elites and Hughes at 32%. 2% at the top and 8% at the bottom. This stuff adds up.
You have to keep in mind the swing between the best teams, and worst teams when it comes to possession stats is maybe around 10%. Most teams are separated by 5% or less. Small percentages make big differences.
Then you have to take into account that Tocchet likes to put out Hughes on shifts against the other team's best when the puck is headed up ice, rather than when he needs to defend. The whole situation is structured around getting Hughes clean air. Zero PK time also helps possession stats because many PKers start 5v5 situations pinned in their own end when penalties expire.
OK... but you said he isnt put out there against top competition enough, which is objectively false by your own stats. You said it maybe 6 different times now and it remains false by your own numbers. Your PK is irrelevant since he leads in 5 on 5 puck on stick time both per game and in total. The below demonstrates that you are pointing to a tiny difference that is actually meaningless. Lets start by asking a question...
Do you believe Ekholm (the Oilers TOP elite competition defenseman and known for being a matchup guy) is hidden from top competition?
Hughes has a
3% lower elite usage than him, that must be a HUGE gap right?
Hughes plays... 4 seconds less than Ekholm per game against elite competition. Thats the astronomical gap you seem to be thinking amounts to him being sheltered enough to warrant a disqualification from MVP consideration.
Lets look at the other number you say is a big difference. At the minutes he plays, 8% against lower competition is 45 seconds per game, but thats WITH him playing higher minutes than these comparables, so
hes actually facing 20 seconds MORE elite competition per game than Makar despite his 2% lower percentage (again from your own stats).
I used Makar since he has a massive gap between elite and grit, but guys like Draisaitl have a tiny one (his usage is flat compared to Mackinnon or Makar) so my argument would work even better there.
Using the most extreme example with the most comparable minutes and production defenseman in the league, Hughes plays 20 seconds MORE against elite players and 45 seconds too much (by usage percent) against Gritensity.
Not to mention that if you look at his production splits...
if I use Makars competition splits on Hughes' stats (maintain his minutes and production splits) so he loses that 8% against low competition... his point totals change by... less than 1 goal. So he'd still be the highest points per game defenseman in the league even with that. Sure his GF% against bad competition is 68% and he dominates them, but the percentage difference in deployment is so small that it doesnt actually change his numbers much.
If him facing 20 seconds of elite competition more 5 on 5 and 40 seconds of bad competition more than Makar, adding a SINGLE goal (rounded up) to his points totals is enough to say hes given favourable matchups and thats the only reason he dominates possession and produces at the highest rate in his position... Then you might want to reconsider if your take is more about bias or actually about the numbers you yourself are touting.
An aside, Draisaitl has a flat usage just like Hughes does... does the 8% more he plays against bad competition mean he should be disqualified against Mackinnon? Hes got a 70% GF% against bad competition so that 8% must be a big deal. Small percentages make big differences, after all. (I didnt do the math on their splits but willing to bet it doesnt matter there either).