Neither Acrobat nor NitroPDF offers full edit capability on PDFs - they both only really allow you to make minor changes (although the more advanced versions now are more powerful than in the past).

I did have someone in one of my classes a few years ago whose company had purchased a full PDF editor that could handle any editing required within a PDF but its price tag was closer to five digits (as compared to the three digit price tags of the far less powerful alternatives already mentioned such as Acrobat Extended). I cannot remember what they said the program was called but presumably a search should be able to find it if your circumstances require a PDF editor instead of a touchup tool and you can afford the price tag (it is just about the most expensive software licence I've heard of - all the higher prices I have heard of for software were for purchasing the software itself and not just a licence to use it).