It said white had the better position and then later in the same position it said black had the better position.
chess.com browser based engine is quite bad and default depth is low (and this is from 2 years ago).
He is if you normalize to 70W of power utilization, which is what more than what the brain uses :)
he is sometimes faster than engines. Engines are stronger than humans at slow time controls, but there are multiple GMs that can beat Stockfish at ultrabullet due to low depth.
It is true that chess engines are not usually designed to play in 15-30s games, however those ultra bullet examples games against the browser based versions which are much weaker and slower than the a dedicated engine process.