CRS are L3 switches; they are supposed to route and run dynamic routing protocols and do ECMP and all the good stuff so long as you dont configure features like nat and firewall that require the cpu and cant be offloaded.

The one thing that it frustratingly does not support that I wish it did is stateless bgp with ipv4 prefixes. It cant offload an ipv4 packet with an ipv6 next hop.