Loosely, real world speed that can be achieved (and then in some cases further sped up) is the 512 byte packet speed with 25 firewall rules given in test results.
For the rds:
https://mikrotik.com/product/rds2216#fndtn-testresults
we have 11655.6 Mbps that - if l3hw can be used go up to 189593.6.
For the ccr:
https://mikrotik.com/product/ccr2216_1g_12xs_2xq#fndtn-testresults
these values are exactly the same.
So, yes, in theory they have the exact same capabilities.
Your ccr2004:
https://mikrotik.com/product/ccr2004_1g_2xs_pcie#fndtn-testresults
has there only 914 up to 1404.6 with fastpath 2627 Mbps and 5753 Mbps with fastpath.
I cannot see a reason why a RDS2216 cannoit be used as "pure" router, but let's wait for some more experienced member advice.