Not a typo I'm afraid. East Germany's economy overtook North England's economy in 2010. Excluding Berlin, East Germany's economy overtook North England's economy in 2013. Every East German large city (Berlin, Dresden, Leipzig, Halle, Chemnitz) is today a stronger economy than every North English large city except Manchester. Manchester is still a weaker economy than Berlin, Dresden, and Leipzig.
All the data is from the OECD using comparable definitions of the cities and collecting at https://tomforth.co.uk/humancapital/