I think theres a couple things that make his 2nd place insignificant:
1. Its the first time this season (I believe) he purposely focused on running the first 200m hard, unlike his last race when he took it out easy.
2. Its only 1 time in 2-3 years he has finished 2nd.
3. It wasnt a bad time by any means.
4. It actually looked like he could have won if he wanted. It looked like he decided to shut it down for second and then realized “uh oh I dont want to get 2nd” and then fired the engines one last time a little too late.
5. The US 4x400 is gonna rock.