Every glorious story in sport starts with the 1st step. Spanish victory over Russia was a sign to the world the Spanish Team is improving, just like Serbia's victory over Cuba and Italy in the Women's World Championship last year.
For me, this is the nice thing about sports: it doesn't matter in theory if you have a better team, when teams enter on court, everything can happen. So, to make things simpler. Spain was better than Russia in the European Championship. Russia was better than Spain in the World Cup.
The only lesson we can take from this is not to underestimate the Spanish Team. They stand good chances of qualifying for the Olympic Games, they are just one step apart from grabbing their Olympic berth.