the advertisement is self contradict, showing lexus and Merz Benz using this CC7 with 215/55R17, in fact it only cover until 16".

I have no idea why they can't make it larger size than 16", i want this in my Teana L33 17" wheel.

The thread looks not that convincing? Not as sophisticated like other brands? Might not perform that well?

Contemplating between CC7 or XM2+ or Hankook eco2
Not sure which one better

Comfort and quietness

For mine, 185 width, xm2+ only got 2 grooves. While other brands have 3 grooves. Does it matter?

Based on what I've seen so far, seems like Continental doesn't do much to improve wet grip of the CC7.
All the launch articles claim "improved safety and handling", but then the rest of the article only talks about noise reduction and comfort.
The thread design still looks like it doesn't push away water when driving through a puddle.

Rather disappointing considering the CC6 was really popular (I liked it for it's quietness, and dry grip was alright) but the main complaint has always been poor wet grip.