Energy breakeven, meh. They need to demonstrate at least 10x output versus input before it’s even worthwhile to initiate a pilot plant demo. I figure they are still 20+ years away from operational fusion power plants. I remember sitting in my senior year nuclear engineering class in 1974. The professor stated that we shouldn’t expect to be working on fusion power plants until 2000 at the earliest and that was assuming that breakeven was achieved that year. I wouldn’t bet on seeing fusion power plants until the 2040’s at the earliest.
That is 22.2 horsepower per metric hour. This test lasted 5 seconds. Is this an advancement? Yes it is. We are still a long way from fusion power, nuclear weapons excepted.