Exactly, the apple chips excel at low power tasks and will consume basically nothing doing them. It’s also good for small bursty tasks, but for long lived intensive tasks it behaves basically the same as an equivalent x86 chip. People don’t seem to know that these chips can easily consume 80-90W of power when going full tilt.
Oh of course, the apple chips are faster, and this is likely a combination of more efficiency thanks to the newer process node and apple being able to optimize the chips and power draw much better because they make everything. Apple can also afford to use larger chips because they make a profit on the entire computer, not just the processor itself.