Difference between Leach and Sonny: Leach, being an old vet, cranky, felt they were too beaten up, or whatever, just let the clock run towards the end with around 3 minutes left without even trying to mount a defensive stop, touchdown, onside kick, etc.
Sonny, being younger and hungrier, or else just cut from a different cloth, would have been running around with his hair on fire trying to engineer a comeback.