In my opinion, this one would be better; Offense is twice as important than defense. You may ask why? Well it is pretty simple. You could have a team with poor offense and beastly defense. What would that be good for? Saving many points against you, but what about the points to win? You can't win with poor defense.
However if you have a team with a very solid offense, and a very poor defense, then you would have the upper hand. Why? Isn't basketball about winning? With the details above, you would have the upper hand because you would score more points than the opponent. In the meantime you loose alot of points too, but isn't it better to score more points, than to save more points?
You say that offense is twice as important as defense, but you do not give a logical justification for it. You argue that it is better to have a great offense and poor defense than poor offense and great defense because it is more important to score points than to save points. You do not give a proper justification for this statement. The aim of the game is to win by scoring more points than your opponents. This will happen only if you score and your opponent does not. The former is related to offense and the latter, to defense. Tieing the game at 100 all is not putting you in a better position than tieing at 50 all. Both offense and defense are equally important. NOTE: here I consider offense and defense to be objective quantities. If a legendary offense can score every 3 pointer they take a legendary defense can stop every 3 pointer they defend.