According to BCIS the new job has to be in a "same or similar classification" as the spnsored one. The exact evaluation of the job descriptions are a bit fuzzy. We know that the INS is supposed to have "good faith interpretation" as per the law, that means cases like yours should be able to pass scrutiny. However, absolutely no attorney will be able to guarantee that your cases will be successful (even though they will not be able to cite a case like yours that was disqualified). So, the risk is for you to take.
My own opinion is that you qualify (based on an overall assessment of title, description and salary), but make sure to present a very succinct case as to why you qualify. INS is not supposed to deny cases like yours outright, you will get a chance to prove eligibility in an interview in a worst case scenario.
On the other hand, INS' incompetence knows no bounds, so in the end - it all depends how much of a risk you are willing to take.
