There's no difference. Actually, Darris told me that at all out top end, they tested both and the sport console was actually faster (in that one test). He thought it was because it doesn't allow air to get down into the cockpit as much as the center steer console does....makes sense.
I've had both and have never noticed a difference in drivability. If you're going to strictly race it, then you would want center steer if weight is a concern. If you have side steer, then you'll probably need to add a bag or two. However, for most of us that actually do fish too, I have my trolling motor battery and start battery in my port compartment and that's virtually all I need for counterweight. I'm planning on putting a side slide plate in it over the winter time just in case I want to move over a little bit.
They're tough to find I think because most of the guys buying XB2002s are more lake racer than bass fisherman. Personally, I LOVE the side steer model, but it has less cockpit space because of the second bucket seat, but I use mine more for cruising with the family.
Plus, us Northerners still can't figure out a way to get the Girlfriend/Wife to be happy riding in the back.....I'll need some tips from the Southern boys on how to get that discussion to go well.
Sam