Just listening to a discussion about where this Spain side sits among the greats. Tim Vickory reckons it's the Brazil '58 to '62 side that's most revered in Brazil and the Uruguay '25 side is the other South American contender. Hungary '53 also getting a mention and Nederlands '74-'78.
They're talking about these sides revolutionising the game, changing the way it's played.
I've seen that Hungary side in old clips and they look remarkable. Their contemporaries look proper old school grandads running jerkily after the ball in calf length shorts but the Magyars appear modern sophisticates.
I was going to say Hungary in the 50s.
I haven't seen much, but - as SJ says - direct comparisons are impossible.
Indirect ones are possible though.
Certain teams have changed the way football has been perceived.
Hungary in 1953 changed world football by showing skill and technique trumps traditional British muscularity and hard work. They then went on to influence club football especially in Spain.
The Brazil side of the 70s also changed things by showing you can win by sheer attacking brilliance. As someone said, their GK was rubbish - and their defence was basically the start of their attack. To concentrate solely on beautiful attack was new and exciting.
The current Spain team has shown great midfield technique and passing will win even without a striker.
Of course not all teams can play these ways, but I believe they all have some influence on other teams.
Good teams eg France that won the WC and Euros - are a contrast in that they were just good. All the players in the conventional positions were above average, but the team played in a normal formation.
The early 70s "total football" Dutch come close - and Barcelona (and Spain) - owe a lot to Cruyff. But they didn't win anything and I think the total football thing was started by the Brazilians.