I guess with everything else being the same a thru-axle can be stiffer but a thru-axle spec chinese carbon road bike may be a flexy bag of tosh compared to anther brand’s QR bike, that’s all I’m getting at. Frame design and wheel spec will be a lot more influential. Thru-axles on road bug me at the mo as it’s the latest trend to be jumped on, often without really thinking it through. On a CX bike front wheel, I see a point – I don’t race CX and can fit my MTB 29er wheels on there. That’s about it..
No links sorry, just catalogues I have from suppliers over there. None are direct-sellers that I know of but they may sell open-mold stuff to the ebay channels. Look up some reports from this year’s Taipei show, thru-axles and fat bikes were the 2 trends that factories over there are catering for.