As for Germany, and for the benefit of budget as I know he loves to talk tactics

Not sure what this false 9 system Low is adopting is all about. The only team that has made this work is Barcelona, and they have Messi who creams goals in for fun at the time they played it. Gotze is a fantastic player, but as a lone forward in this system he is simply too small. Germany cant knock balls up to him because he gets dominated for size, so that takes a dimension out of the attack. Its the role of that false nine to drop back into deeper areas of the field and get between the lines of defence and midfield and create space for other players, but those midfielders advancing in his place have to have goal threats or the system doesnt work.
But Low picked Toni Kroos, a fine player but one who has always been famous for the poor amount of goals he contributes. Khediera is also not a goal scorer, he has hardly scored goals, and Ozil is a fantastic playmaker but another person who has never had a season of double figure goals. So you have Gotze dropping back to drag defenders out, but no one with a natural inclination to then get in his place in more advance roles, and you end up knocking around the ball aimlessly in midfield. Muller can score goals but on the wing he is wasted. And Draxler's career seemingly seems to be following the same route of Schwieni, where as a young guy he was a pacey dribbling winger, but who at club level is now being transformed into a deeper playmaker, and Low doesnt seem to have been watching his domestic league by asking him to adopt a role he hasnt played for 3 years.
So you end up with two wingers who arent really wingers, a striker who isnt a striker, and no central midfielders that carry a goal threat in a system that is designed on its requirements for the central midfield to get advanced and become the main goal threat. Additionally, this system asks a lot defensively at the top of the pitch by getting your attackers to press in the final third, but the only person in that midfield who can tackle is Sami Khedira, the rest are all luxury players who arent renowned for their work off the ball.
Defensively Germany look shaky too. How they havent conceded yet in this tournament is a mystery, Poland missed two sitters last night and should have won.
Germany have the players, but not the system at the moment