User blog comment:TheTobarMethod/Nerf Worthy Champs + Your Thoughts/@comment-4022742-20130704071228/@comment-6906412-20130704071847

Vi doesn't have great sustain, none of those three have any natural defense steroids. Vi has good single target burst, but meager AoE, whereas Zac and Hecarim are the opposite. Each of them have tradeoffs.