Your bike may be able to do it all but no bike does it all GOOD. Of course a lot depends on your riding skills but getting the right bike for where you like to ride the most is your real decision. And this is why the question “does size matte” should come into play because it does, and not necessarily in the way you think it would. This is a great video and addresses this issue quite nicely. When it comes to dual sports the idea is to have a bike that does it all but sometimes riders find the necessity to have two machines. I find myself in that category. I have a KLR 600 that I ride in most situations especially on longer trips but I find my KX 200 (240 big bore kit) to be much better for me on shorter more gnarly rides.