Beijing is in a more active seismic zone than Germany, so it is likely that these extra supports are for that.Are the trains much heavier than Arthur’s? It seems wildly oversupported in comparison.
I'm no structural engineer, but from my experience (admittedly no projects in China, but Middle East and Southeast Asia) the seismic design often has to be proven by dynamic simulation. So there could be lots of things at play - the shaping of the track, size of the track, size of the existing supports (possibly even that Hulk is designed with hurricane wind loading, which may mean the supports are already beefy enough by coincidence), the specific positioning of the supports, weight of the trains, etc. Comparing a B&M multi-looper to a Mack family coaster is a tough thing to do at the best of times, let alone without knowing the specifics.Earthquake stuff would make sense, but then I'd ask why the B&M supports aren't so busy.