Electric SUVs and compact SUVs describe different characteristics, so they are not opposing vehicle types. Electric identifies a powertrain; compact identifies a size class. A compact electric SUV belongs to both groups. To understand meaningful differences, compare a battery-electric SUV with a similarly sized gasoline or hybrid SUV, then examine any separate size difference.
The powertrain changes energy storage, replenishment, propulsion, and some service tasks. Size changes the body footprint and the passenger-and-cargo arrangement. Keeping those effects separate helps explain what comes from going electric and what comes from choosing a larger or smaller vehicle.