Yep, they are a bunch of nobodies. That might be enough to win the World Championships, but not the Eurobasket. They are hopeless against the almighty Greek superstars.
First who said the Greeks were superstars? Spain has one star and that is Pau Gasol. Greece has two stars and that's Yannis Bourousis and Vasilios Spanoulis. Other than those 3 players everyone else is a role player for both teams that is relied on to play his role.
Spain has Marc Gasol doing decently, and Navarro and Fernandez, and Reyes as always are doing their part overall. But the rest of Spain's role players are all not doing their job. It's a big stark contrast to the Spain of previous years where they also had Jimenez, Calderon, a much much better Garbajosa, even Mumbru in the past was definitely better than now. The simple fact is Spain's roster is a lot weaker this year that they rely on Cabezas, Lopez, Llull, Claver, an 18 year old kid, and some old players that seem past their prime.
Now Greece as you call "superstars" is a bit different. 2 stars they have with Bourousis and Spanoulis and their role players seem to all be performing. Perhaps they are just hot and cannot keep it up. But look at Turkey as well they are a team of one star (Hedo) and lots of role players and their role players are coming through much stronger than Spain's role players are.
Teams like Serbia and Croatia do not even have a star on their teams, they have the closest things guys like Vujcic, Ukic, Planinic, Tepic, Teodosic, Krstic, Velickovic and such type of players. But really there are no stars there (not saying some of those young players cannot be in the future) though. So for them you see a whole team of role players but yet they play well many of them and they get a good contribution from a large section of the team.
Again, this is not happening with Spain so far. All I am saying is that just Pau and then help from his brother, Fernandez, Reyes, and Navarro is probably not enough to win a EuroBasket. That's just not enough depth of players that are contributing if you run into another good team that rolls out 9-10 players all helping their team. Spain almost looks like to be honest that it reminds me a bit of like the 2004 Team USA.