Simple both Boveda packs and HF beads can hold a consistent RH. Both add and subtract water from the air. It would look bad if they just showed how much more quickly HF beads do so. HCM beads doing so significantly faster yet , weren't even tested...
Clearly they scoped out the competition so they must have gotten some HCM beads to try... Apparently the HCM beads performed so poorly that Boveda opted not to include them in their test.
