For a moment, I thought you were going to say that you had shot it digitally, and printed it on an inkjet .
In my mind there is a fundamental difference between delivering work that you would like the chance to improve upon, and delivering work that you consider to be sloppy and second rate.
The first is really a reflection of your desire to both excel and give superlative value, while the second would be a symptom of laziness and a general lack of care - clearly not the situation here.
From what you have posted, I infer that you feel that the photograph chosen by the client is one with a good level of quality - just not the photo you had envisioned.
In my experience, clients who buy photographs often value things that photographers (and frequently third parties) don't value nearly as much.
And sometimes, the only evidence available that the client has any good taste at all is that they hired you!