The Can-Am independent rear allows you to tow every bit as much as a solid axle.  I'm not really sure where the idea comes from that an indy rear suspension would reduce your towing capacity, since your only concerns are traction and too much weight for the transmission to handle safely.  As long as the indy suspension is sprung high enough, it won't squat.

Can-Ams are the old Bombardiers, however they are nothing like a Cat.  Generally Cat, Kawasaki (and sometimes Suzuki) share technology.

Rod