So it’s unlikely to confuse someone flying CBR-SYD.
But what about a Singapore national flying BNE-MEL? SQ would be offering full-flats on a sector that length, as standard.
While I think it would be easy to match the picture with the likely offering, if an airline can’t do that, why not default to your lowest common denominator instead of the highest? Why not show the 737 cabin as default, even for international? If an airline is worried they might lose sales showing a 737 to someone putting in for an international long haul upgrade, then perhaps there’s our answer…it’s designed as a sales technique.
If it’s a sales technique, should it not match the product?