I read this and was puzzled, until I realized that you are talking about the pills. The nasal spray is effective, although probably not more effective than a saline solution.
True except it is definitely more effective than saline. Phenylephrine nasal spray is not as effective or long-lasting as oxymetazoline, but it's also not as dependency-inducing.
The efficacy of the nasal sprays had already been demonstrated when they introduced the pills. Surprisingly, the efficacy of the pills was never properly demonstrated, and now that it's being investigated, they're pulling it from the shelves.
> although probably not more effective than a saline solution
I guess saline is a baseline against which effectiveness should be measured here, especially since nasal sprays are usually saline plus something. (I guess? Not sure about Sudafed specifically.)