i think its just that i have an image of STN and LTN for that matter being just being a low-cost carrier airport with a few cargo flights and charters, it looks to me that these two airports are in the shadows of LGW and LHR, trying to get airlines from where ever they can, everybody knows that they would rather fly into LHR and LGW not just for an easy commute into the capital but for connections also.
it might be just my northern ingorance shining through, im southern ppruners will put me right.lol
i think it comes down to bias, as MAN is my home airport