HFY fare is a coin toss.
The Jenkinsverse rapidly goes from humans being assumed nonsentient (because our planet is a deathtrap) to cheating our asses off with galactic-standard technology. For example: teleportation is possible, but only between pre-set endpoints, and with a lengthy charge-up. So humans crammed obscenely large capacitors into standard hulls and instantly bip between microsatellites. Our ships have no staying power, but they're absolutely infuriating to fight.
Our main problem is being 99% confined to one vulnerable rock.