Prague was near the end of the leg, Berlin was the first show. Huge difference. Axl was jetlagged and struggling (at least in part due to sound issues), that is why he was less energetic. It was by no means the crowd's fault. He was yelling in his mic and running backstage any chance he got, from the very beginning. That had nothing to do with the crowd. Plus if you can barely hear him sing the first songs, you can't really blame (part of) the crowd for not being super enthusiastic.
If we follow your logic, only Eastern Europe (and maybe South America) gets good shows and the rest of us don't (and serves us right).