Ah, you're right. 1) I got it backwards, verification is much faster with RSA, so RSA is better for clients). 2) I was testing libressl (macOS, OpenBSD), where signing speeds between rsa2048 and ecdsap256 are nearly identical (Core i5, M1, AMD GX-412T), whereas with OpenSSL (AMD EPYC) ecdsap256 is faster (30x advantage to ecdsap256 actually, as compared to 4x verification advantage to RSA). Though, the magnitudes here seem to be sensitive to optimization effort.