Incorrect for an NBA game.
Your not properly accounting for the resulting actions and opportunities that occur after the shot. It's all very simple analytics, although maybe your not capable of comprehending probabilities beyond one single action.
If your talking about a shot at the end of the first quarter as time expires then sure in that example 33% 3s is equivalent to 50% 2s. Otherwise no, the expected value of each opportunity from missing 67% of shots or 50% is substantially different.
Just because a team has a poor offense as the Blazers currently do or even if they conversely had a great offense, it doesn't change this dynamic. That you would try to use that as validation of a falsehood shows your lack of understanding NBA probabilities.
Not sure what's more impressive, that you could butcher probabilities so easily or that you moved Peter Griffin over to the Simpsons.