I think it gets glamourised because it's Germany. If you look at England for example, such great players as Zat Knight, Nicky Shorey and Paul Konchesky have two caps.... It doesn't mean all that much.
My predictions for the game:
Minimum of three (3) fullbacks on the pitch (for Saints) at all times.
VAR stoppage of at least 4 minutes.
Downes to play and be booked.
Saints will play well once 2-0 down.
Same old story, really.