Currently the device selection in the benchmark only allows you to select a single GPU to benchmark on. Yet for CPUs it is possible to get results with multiple CPUs in the system (as evident by the 2x AMD/Intel ... entries on the Open Data website).
It would be fairer to also allow multi-GPU configurations (but e.g. restrict them to only GPUs of the same type).
On a similar note: The UI version of the benchmark currently preselects a device for benchmarking and only shows them all in a drop down. I'd suggest always showing all available devices and make a selection with radio buttons instead, so it is e.g. obvious at a glance that you have two API options for RTX GPUs (CUDA and OptiX).