Japan is geographically larger than Germany.
https://en.wikipedia.org/wiki/List_of_countries_and_dependen...
https://en.wikipedia.org/wiki/List_of_countries_and_dependen...
Germany's GDP is #3 (nominal) or #5 (PPP) [2].
[1] https://www.imf.org/external/datamapper/PPPSH@WEO/EU/CHN/USA
[2] https://en.wikipedia.org/wiki/Economy_of_Germany
UPDATE: fixed the statement, previous was about world trade share.
Your link [1] shows that the EU surpasses US in international trade, not in GDP.
Although the statement still holds, but it's "slightly" not "greatly" now.
US / EU / Europe:
Nominal [1]: 27.0 / 18.4 / 25
PPP [2]: 15.5 / 14.6 / 21
My point was that EU is higher than #6, as well as Germany, whatever the metric.But, as I was corrected below, they meant "sixth" as share, not as rank.
[1] https://www.imf.org/external/datamapper/NGDPD@WEO/USA/EU/EUQ
[2] https://www.imf.org/external/datamapper/PPPSH@WEO/USA/EU/EUQ