I genuinely don't see it as having an impact on BHX, nor how they serve BHX.
Whilst we're yet to know aircraft type or frequency, it's unlikely it will be a daily 788 (though that said I never would have suggested they would pick CWL either - an airport of just 1.6m Pax). Yes CWL is in theory in our catchment but qatar aren't about to lesser their offer at BHX as a consequence, especially when they have been getting 80%+ loads pretty consistently on the 788 they use at BHX, and in competition with EK!!!