It will be very interesting, to compare the execution time, power consumption, code size and perhaps other things. By recompiling the same project, between the Arm M33F cores and the RISC-V cores.
Most systems/MCUs, don't let you do that. I.e. Not using exactly the same MCU, and just rebooting into the other CPU type, and recompiling the GCC code, and any other changes that need to be made, between the project types.
Also, according to the datasheet, at least one of the RISC-V features (related to what is usually used as a 1 microsecond timer/time signal for RISC-V), is available for both the RISC-V and Arm M33F modes.
EDIT:
Added quote from datasheet:
3.1.8. RISC-V Platform Timer
This 64-bit timer is a standard peripheral described in the RISC-V privileged specification, usable equally by the Arm and
RISC-V processors on RP2350