The Bulldog's temperament is the reason people accept everything above. Its keywords are gentle, affectionate, resolute and docile, and its ratings back them: 5/5 with children, 4/5 with other dogs, 4/5 with strangers, 5/5 for apartments, 2/5 for barking.
Modern Bulldogs are not guarding dogs and are not reactive. They are heavy, slow, comic and enormously tolerant, and they will lie on a sofa for most of a day without complaint. For a family with young children, a small flat and a quiet routine, the temperament is close to ideal.
The 3/5 trainability is honest — Bulldogs are stubborn rather than slow, and they respond to short cheerful food-led sessions and disengage from repetition. Their 3/5 tolerance of time alone is decent.
The Pit Bull is warm with people too, at 4/5 with children and 3/5 with strangers, and considerably more trainable at 4/5. Its 2/5 with other dogs is the fact that shapes every walk: no dog parks, no on-lead greetings with unknown dogs, careful neutral-ground introductions, and awareness that tolerance can decline at social maturity between eighteen months and three years.
The two breeds therefore fail in opposite places. The Bulldog is easy to take anywhere and hard to keep healthy. The Pit Bull is easy to keep healthy and needs planning to take anywhere.
Lifespan is the last difference and a large one: 8 to 12 years against 12 to 14. Where an individual Bulldog lands in that range is heavily influenced by how it was bred — the airway again — and by whether it stays lean.
One shared point: both benefit enormously from staying lean, and it is free.