Apart from old Portsmouth the rest of the city is a dump compared to Southampton. It has some of the most economically and socially deprived areas within the country. Development opportunities are limited because it's land locked.
Back in 2007 Southampton was listed as the third fasting growing city in the uk in terms of economic and population growth. We've got a great port (owned by Dubia World) which boast some of the biggest and best cruise liners in the world, fantastic shopping facilities (Gunwharf is crap by comparison), great night life, Southampton City airport, a population of 230K (50k more than Portsmouth), one of the biggest and best city university teaching hospitals within Europe, renowned academic institutions (Southampton University), excellent diving centre and lots of open space for sporting activities. The list is endless. It's the best city in the South. Be proud!