Now what?

First time ever doing WT. I just used AOE characters and won easily but now what? Ive heard ppl say its grindy but why? Is the goal to get #1??? If so do you just do that by doing it over and over??

First time ever doing WT. I just used AOE characters and won easily but now what? Ive heard ppl say its grindy but why? Is the goal to get #1??? If so do you just do that by doing it over and over??