To system administrators and people managing large fleets of servers "stability" usually means "doesn't change much" rather than "doesn't crash". In that sense,

To system administrators and people managing large fleets of servers "stability" usually means "doesn't change much" rather than "doesn't crash". In that sense, RHEL tended to be more stable than Debian / Ubuntu. Though that may change somewhat with Ubuntu's recent 10 year LTS plans.