Those jumps were for the jumpstyle event last weekend. they also had created a new mental downhill line last weekend for the ixs dh cup.
winterberg is fun: lots if different lines for dh, 4x, shore and freeride. also good for beginners . the DH is a proper one. the ambulance rides at least once a day in the weekends
The DH at willingen is even more extreme but there is also a mellow freeride with optional shore/drops
I would reccomend to spend 2 days at winterberg and one at willingen. and don't forget the schnitzel restaurant near the entry on top of the hill!!