Compact SUVs differ from electric SUVs in what the words describe, not in belonging to two exclusive groups. Compact identifies a size class. Electric identifies propulsion, and a compact electric SUV is both. A clear comparison separates the space a vehicle occupies from the energy system that moves it.
If you mean a compact gasoline SUV versus a battery-electric SUV, compare similar usable capacity first. Then examine refueling or charging, powertrain behavior, packaging, and upkeep. Otherwise, differences caused by a larger body or a different trim can easily be mistaken for differences caused by electric propulsion.