I find it is usally the other way around where webtoon has better stats than Tapas for most comics. Tapas does have better communication methods and is easier to be more active with readers and other authors though so the engagement feels more direct.
On my past comic my stats favor tapas always, but since my reboot at first Tapas was more active, but slowly webtoons stats overtook it (outside of comments by people, tapas is still more active in that department).
I also feel webtoons subs are more natural as in tapas is easier to know who sub so the 'sub for sub' (nothing wrong with this, just pointing the difference in sub methods for both platforms) is more prominent compare to webtoons. I love both platforms though!