Again, I am really not trying to be argumentative, and reaaly want you to have the support you are looking for. All I am saying, though, is that T-Mobile still has not released their official version 4.4 KitKat for this particular Samsung T-Mobile Note 2. I see that Wind Mobile released their version in May of this year. I am just stating that there is nos such thing as stock 4.4 KitKat running with a Touchwiz interface on a T-Mobile Note 2.
We have all been anxiously waiting for that release for at least a couple of months now. Sprint, Verizon, AT&T, and even US Cellular have all announced thier release of 4.4 KitKat on their versions of the Note 2. Your Wind Mobile provider has also released their KitKat as you point out in your link. Unfortunately T-Mobile has not yet released that software.
I have reviewed the link you provided and it seems that you are correct and Wind Mobile has your official release of KitKat for the Note 2. However, I am not sure how we can help in the T-Mobile forum, since we don't have that official firmware yet. Thousands of folks here sure wish we did! Sorry, bud.