It is fair to say that most players think of themselves in a very high regard, and they are right to do so as they are professional footballers, but sometimes their claims can be a bit too much.
Now, taking into account that Wagner has been a regular for the national side for sometime this claim has a hint of truth to it, but for the most part it's very far fetched.
To prove Wagner wrong and show that there are a number of better German forwards than him, here are four strikers who are currently besting the self-proclaimed 'best German striker'.
4. Kevin Volland - Bayer Leverkusen
Still only 25, Volland has improved his reputation year on year in the Bundesliga as a clinical finisher. This season the German has been in sparkling form, with 10 goals in the league so far - five more than Wagner.
Wagner did claim before that statistics don't matter and that performances are the most important, but even so he is still a long way behind Volland. Wagner may play for Germany's best club, but he isn't starting most games - Volland is.
It's fair to say Wagner would start week in, week out at Leverkusen but the truth is that he is a back-up forward. Wagner can't be the best German striker if he is playing second fiddle to one of his teammates - even if that teammate is Robert Lewandowski.
3. Thomas Müller - Bayern Munich
Even though Müller is not regarded as an out and out striker, German national manager Joachim Löw has used the Bayern man as his main forward at international tournaments before - and it's fair to say that Müller has enjoyed his time at the major competitions.
Müller burst onto the scene at the 2010 World Cup and has become a household name since. The German striker scored at least five goals in his first two World Cups, and with another just around the corner you wouldn't put it past the Bavarian star to bag plenty more.
Again, the question looms over where Wagner stands in the pecking order of German strikers. Müller was not picked for the Confederations Cup and Wagner was third choice for that tournament, which would now make Wagner fourth in the pecking order.
2. Lars Stindl - Borussia Mönchengladbach
Like his fellow countryman Werner, Lars Stindl shone at the Confederations Cup in Russia last summer. The forward scored the winning goal in the final to give his nation the trophy, which raises the question - how far down the pecking order is Wagner?
With both Werner and Stindl featuring at the tournament and Wagner barely playing, that meant the Bayern man was third choice for his country at a major tournament - with Germany leaving strikers like Thomas Müller at home.
Wagner should really consider his claims before he makes them because he is currently a long way off being the best German striker.
1. Timo Werner - RB Leipzig
Probably the most obvious pick out of the bunch, RB Leipzig goal-machine Timo Werner is a certainty to go to Russia in the summer and out of all the German strikers is most likely to start up front.
Werner has already proven that he is better than Wagner at a major international tournament, after the forward starred in Germany's triumphant Confederations Cup campaign in the summer of 2017.
Both players were picked for the squad and it was Werner who came out on top as he won the golden boot, while Wagner didn't even get off the mark at the tournament - but still in his eyes he remains the best German striker.