The wheelbase is longer than a xx4, kyosho zx5 and much longer than the first generation of sb sport or pro buggies.
If by wheeler you're talking about the academy v2.
I have compared them first hand last weekend actually. Some people were contemplating my buggies stability over the rough stuff. The fact that the chassis is flexible and long really helps. Of course, damping and other stuff helps as well !
Hope that answers your questions !
Next race weekend I'll compare it to the xxx4 and the bj4 worlds and let you know. we have a yokomo coming as well.
Scy