I think number of defenses can sometimes be misleading because they can occur when someone underestimstes a team and preloads them with tm, and the next couple of hits also underestimate.
I think your team has a defensive-oriented set up. But I think some of its success is due to people looking at this weirdly matched team with a Lumi lead and sending in fourth rate teams against it. If people stopped to think of a hard counter, it would probably go down more quickly.