Call me a pessimist but I assume the flight arrive son time or late. I always allow for lateness and any subsequent appointment. As a self employed person, I do not accept any booking that is predicated on an aircraft arriving on time, or even within 12 hours for short haul and 24 for long.
It is true that I would NOT choose a carrier with a very bad time record - but I only book carriers that have reasonable or above records. Once they are 'reasonable' then other factors take over.