So far as I know, the WCC stuff is made in Europe, NOT China.
The last discussion of Chinese carriages I read, had nothing good to say about them.
A multi-purpose vehicle can get you around a course, be fun on a picnic drive, drive at the show. However such carriages do have drawbacks if you decide you want to play at a higher level. Like all-purpose scissors, all-purpose fence tools, they can sorta do a job, but never as well as the specialized tool for the task. You sacrifice things so the carriage can do other things also. The lowest level driver/competitor, can make all-purpose work because they are not asking for much.
You have to decide what your main use for the vehicle will be, see if this model XXX will work for that purpose. A vehicle you can take several friends along for a picnic drive, just is not the best choice for doing a marathon course, so you plan to give up points in time, to not kill off your horses.
Big, strong horses, might be over-sized for some models. Especially the draft cross horses. Then things are out of proportion when you put horses to vehicle. Vehicle might not be strong enough if draft “leans into his work” and things will bend or break from the sheer power of horse.
There just is no single vehicle that is perfect for all uses. Think about your driving fun, then you choose what will best suit your fun times to drive.