What IE debacle? Trident is now widely considered to have the most correct HTML5 implementation in a major browser. It might not have all of the draft stuff that Webkit has, but it also doesn't require all of the webkit css hacks.
I think you missed missed point. Many of the features listed there are draft spec. Rapid adoption of early draft specs are what caused the current Webkit mess.
IE 10 doesn't have the most features available, I never said it did. What I did say that that the features that are present are more correctly implemented than other browsers.