Multibow too imba?

[Frechheit]

At present they are 3 good tactics to play with multibow.

1)demo+bow
2)scout+bow+hull
3)lightank+bow+basic magic

In my Opinion the bow is too overpowered based on my experience of playing battletanks privates with only pros. When u r with other guys in the mid for example 3vs3 and u r the only one with bow u creep like the 2 other mates together.
I think to raise the Costs for the bow would be good,because a lot Players play it and i mean the map is called Battle tanks not Creep Tanks.
So more Players would play basics or other stuff.

So i want to hear your Opinion