I am not a philosophy student, but I think you have that backwards. My last comment was fundamentally a utilitarian one as it is about maximizing efficiency and minimizing waste. You don't see utilitarians walking around talking about "a sufficient level of good for a sufficiently large group of people".
That's incorrect. In your original comment you referred to "a positive net result", which the utilitarian will always prefer by definition. Perhaps you are confusing utility with efficiency?
>which the utilitarian will always prefer by definition
That is the heart of our confusion here. You are comparing it to a neutral state. Yes, a utilitarian would prefer any positive outcome to that. However, I was implying that there was another path that would have resulted in an even more positive result but through inefficiency we were left with a lesser but still positive result. That waste of resources like time and money is equivalent to a waste of utility that a utilitarian would obviously oppose.