The short ribs can be--and are often best--done low/slow. The CSRs--well, harder to say as it depends on from where they were cut--fattier section of butt? --leaner section of butt? --fattier section of the blade end of the loin?
You can low/slow most CSRs but the done window is narrower than whole butt or short ribs, especially if the CSRs are on the lean side or if they're thin.