The further I progress through my career, the more I realise that the RAF is full of geeks and nerds. Even the guys who seem pretty 'Alpha' are geeks underneath, they just look macho when placed amongst all the other geeks. Most of my peers are exceptionally intelligent and qualified, many have masters degrees in STEM subjects and even those without a degree aren't exactly short-witted. When you get into the more technical aspects of certain jobs such as comms, weapons and space, some guys are so incredibly smart that I wonder what prompted them to join the military in the first place and not become professional eggheads.
Bottom line - and I may be shooting myself in the foot here when comparing the RAF to the other services: Of the three services, the RAF is the place to go if you want to flourish as an intelligent, independent person with superb technical skills. The focus on military skills is not as strong as in the Army or maybe the Navy. But that's why the Army are the ones out defending your while you unpick the latest GPS jamming technology, or develop the latest tactic to defeat J band radar guided missiles; or as an IntO you would be analysing the trends of movement or comms patterns to determine the enemy's most likely course of action against friendly forces.
Regarding your perceived suitability for selection: Nobody is born with exactly the right set of skills to be a general. Selection is there to spot the potential inside you. Don't let preconceptions stop you from having a darn good crack at it.