If your duties are clearly spelled out in the letter and they match the majority of the duties for 0213 I would say the title is not important, but if the duties look more like one of the other skill levels, like the duties really look more like a system admin then I think you'll have trouble. They seem to be particularly picky about 0213 because of the huge number of people who apply under that category. Pay particular attention to the duties that differentiate the 0213 from lower level positions, like budget responsibility and supervision of junior staff.