Well, the higher it gets, the faster it goes down. The decay is non-linear, so the accounts you are comparing yourself to could've already lost most of their rate due to decay, so it decays slower that the fresh upvotes you've got, for example.
Anyway, it still represents who's actively contributing and creating value, though the decay may be too fast.
Wow, that's a tough learning curve. It seems to get harder the higher you climb, like ascending Everest. The dizzy heights require more effort just to stay in the same place.