Overall Germany will be a better place to live for the average person with regards standard of living, but some of the things put forward as facts in the tweet are not true or distortions. One example student loans - the tweets quote a degree as 4 years, but the standard in the UK is 3. Half of the UK student loans are never paid off and some degrees in the UK don't have fees. The UK systems is more akin to a graduate tax.
Another example saying overall prices are 25% lower in Germany than the UK, where is the evidence for this? When I went to Germany I would say they were very similar overall and I know people who have gone to Germany recently and said the same. I don't know about incomes is Germany, but if the average income is over £43,000 I would expect Germany is to be flooded with people from other countries i.e they would represent over 50% of the overall German population. The £43,000 looks a little too high for say a median wage. The difference in GDP per person between the Germany and the UK is about 12% according to the Internet. However I do expect the wage differences are increasing and I expect the UK to have much more regional inequalities, income and wealth inequalities, because we are quite an unequal society. From what I have learnt Germans have seen themselves as a more collective society, certainly since 1870 than the UK while in the UK its been more fashionable to look after number 1 and put a low priority on wider society.
Germany has done well to keep most if its manufacturing base and modernise it. German companies in general are cleverly run. For example I have just watched a programme about Slave labour in Germany during WW2. Many German companies today benefitted from slave labour. No reparations were paid untill the fall of the Berlin Wall i.e a WW2 peace treaty was in place. The average payment was 5000 DMs about £1700 for people still alive and this was only given after long legal battles and an agreement it was final payment. Many of these companies are very prosperous today IG Faben, Krupps Thyssen, Siemens, Mercedes Benz, Dresdner Bank, VW, Allianz, Bayer etc