Both holidays are about being joyous, celebration, and sharing your joy with community. Purim focused on the joy of not getting killed off as a people, while Sukkot celebrates the (hopefully) fruitful harvest, a result of hard human work and physical support (sun, rain) from G!d. Purim gets points for yummy treats, and I should know as the 4 year host of a hummentashen bake off.
But Sukkot deals the upper hand for many reasons, including 7 whole days of fun. It is also one of the holidays with multiple names, two being: Zeman Simkhateinu, the Season of our Rejoicing ...
