I could object that. From my last experiment SEA-IAH only generates $2,957K with concorde on 1.20 price tag. While SEA-ORD, using B747-100 generates $5,324K with B747-100 on 1.00/1.00/1.00 price tag (on 1985.1 in ATO3). This is due to in fact concorde has lower passanger capacity than a B747-100 and i agree that B747-100 isn't the best but it's much cost-effective