There needs to be more anti tank options

As he said: Micro. Bots are very fast, and run quite a bit faster than tank turrets turn. While I don't typically micro, when I am trying to annoy someone's base with a small bot army, I tend to micro like mad, to keep them ahead of the turrets.

Of course, that means I'm not doing other things, so it's a tradeoff. Micro'ing takes a lot of attention off of the more macro strategy components, so it's a decision you make when playing.

Bots can be effective without micro, but against a similar sized army of tanks, yes, they will get plowed under.