Unfortunately, the Kinect is just a peripheral and devs don't have the luxury of investing a lot of time on something that most players do not have. So they end up taking the easy road and using Kinect's audio pre-processing features to include voice commands without taxing the CPU.

Should european players change their passwords as well?

We'll always have the mobile version/web app.

If this thing is packing a Tegra 3 SoC with a quad core CPU and 12+ ULP GeForce cores running at the highest clock frequencies, it can probably render some pretty sweet graphics. Not 360 or PS3-level, but sweet nonetheless!