These 2 workouts are very comparable, it depends how hard he pushed in each of them to assess his fitness properly, which we won't know, so we can only speculate.
Let's say it was the same effort in and he will be in similar shape to Berlin last year. We have to take into account that London's course is slower than Berlin and usually gets worse weather. Also, every year, the pacing wrecks the whole race.
In my opinion to see a new WR in London, a lot of variables will have to come together, Eliud to be in the same shape as Berlin, ideal weather, and very good pacing with a slight negative split race ( without an opening 5k in 13:50 and a first 4:22 mile lol ).