You already biased the poll kind of. You put "suckish" in front which signifies you expect people to agree. I myself love Zubat. That's why I chose it. I think it could defeat any of the Pokemon that you stated earlier, even if you think it's suckish. It'd be different if you put that you didn't like Zubat into your post (which has nothing to do with this topic) then you'd be just stating your opinion. The poll options, though, show that you expect others to believe that Zubat is "suckish".
I honestly put Zubat because I do like it better. When it evolves, it's one of the best Poison Pokemon and Flying Pokemon available. It's versatility is endless as an annoyer and it's got speed to back it up. Especially with it's Mean Look and 4x resistance against Fighting types. I think Zubat is the way to go.