Yup. I'd take Dani Alves and Marcelo at their best over R.Carlos and Cafu. The only blight against them is a lack of success for the NT but the multiple champions leagues titles and a plethora of league titles make up for that.
CL doesn't make up for it as it is close race, Carlos (3) has one less CL than Marcelo (4) and same for Cafu (2) with Alves (3)
Carlos has same number of Liga titles as Marcelo (4) with additional couple of Brazilian league titles.
Alves beats Cafu in league titles tbf.
Honestly, I think prime Carlos was the best full back I've ever seen, although I can't say for sure because I always believe one can't be too objective regarding players we have grown up watching from young age. But I think Alves was better than Cafu but very small margin