My 'main' Crohn's is classified as gastroduodenal and occurs in the stomach, duodenum and esophagus - but I am also prone to significant amounts of inflammation in my jejunum, sometimes concurrently. From what I hear, although doctors use the types to identify the predominant area of inflammation, many IBD sufferers also experience instances where inflammation occurs elsewhere in the GI system.
Daunting, I think how hard your IBD is to control is very much a case of how it presents in the individual rather than the specific type. I will say that my GIs have struggled far more with treating my gastroduodenal Crohn's because it is considered a 'rare' type (less than 4% of sufferers diagnoses with this profile) and therefore there has not been the same foundation of treatment case-studies to work from. However, with all Crohn's it can be a case of trial and error. Despite struggles, I personally have found that through attentive experimentation my doctors have managed to develop certain treatment strategies which are proving to be very effective! I think that the course of treatment needed for Crohns even within 'types' can be very individual-specific - we all manifest disease slightly differently.