Why is Kbin seemingly growing considerably slower than Lemmy?

I'm a bit confused at the explosive growth of Lemmy and the slower growth of Kbin. Do the stats reflect the reality or is there a problem with the data being fed back to the various stat hubs?

I know the difference is partly because Lemmy was a larger platform, and is better known but the growth of Kbin seems suprisingly flat while the community seems to be getting more and more active?