We just witnessed the end to Coburn’s dominance over US women’s steeple. It’s been coming but the rapid improvement by Frerichs only points to her getting stronger or maintaining the pole position for several years.
Coburn is still superior to Frerichs, who doesn't risk the front end. When you are content to remain back in the pack in fields of this caliber, you'll occasionally pick up the pieces when others falter but you aren't a serious contender for best in the world.
I guarantee the other countries still fear Coburn more than Frerichs, just like Jager is respected more than another American male who would linger in 5th or 6th place throughout, race after race.