They are not in the same class, which is reflected in the power envelope.
BTW what's up with people pushing N150 and N300 in every single ARM SBC thread? Y'all Intel shareholders or something? I run both but not to the exclusion of everything else. There is nothing I've failed to run successfully on my ARM ones and the only thing I haven't tried is gaming.
For 90% of use cases, ARM SBCs are not appropriate and will not meet expectations over time.
People expect them to be little PCs, and intend to use them that way, but they are not. Mini PCs, on the other hand, are literally little PCs and will meet the expectations users have when dealing with PCs.