you're right, and its ironic i've had the best DK placings of 09, yet i'm the most pessimistic about DKs ability.
in the tier list debate (prior to voting on lists) we just argue about characters randomly. I brought up DK and my argument for him having too many hard matchups to be considered high tier material. Its not so much that he's "mid tier", as much as the fact that...there are simply many characters simply better than him.
ddd, falco, olimar, pit, mk, diddy, ect...theres so much pressure on DK to REALLY learn the matchups. This is why he is a difficult character to master. Most high tiers can use a set playstyle that dominates half the cast ('nado, banana-whoring, chainthrows, etc) DK really, truly must change his play style for so many different oponents. and some of them just offer so much of an unbalanced reward/risk...i just consider it too much, when there are so many other characters that avoid these problems through simplicity.
every stock vs pit, u can expect getting grabbed (pit is amazing at getting grabs w/ his pivot, jabs, etc) and a chainthrow into f.smash. you also have to eat arrows to the body every time you try to recover, plus forcing you to approach. a mistake as Dk might mean getting mirror shielded, grabbed, or getting caught w/ his forward B really ackwardly by the edge. But when pit makes a mistake at high percentages, DK's punishment is death. And this is why DK can beat pit, because they're not played perfectly as characters, and mistakes happen...but i think the more skilled and approaching top-level play we push the characters...the lower DK is going to go, because we've been having to substitute finding cheap tactics with situational tricks.
also, i would not have written nearly that much if not for the fact that i am not sober. that is all.