Ok, OP here.

Before this degenerates into an FT "my opinion is better than yours" type of thread, I would like to reconfirm that the only purpose for this thread was to seek data about my impression.

The data should be relevant, of course (i.e. overall dispatch reliability), not the kind of statistically meaningless "I've been flying in them for the last 10 years without a hiccup" data (even the most frequent of flyer has sampled such an infinitesimally small number of flights that you can't conclude anything at all about the fleet in general, especially about changes over time).

BTW, my "only" referred to the absolute size of the fleet, which is small compared with other singe-type fleets; for example, AA has an almost 200-sized fleet of M80s plus an almost 200-sized fleet of 738s.

Finally, AA has 49 frames of 772 and 77W, a similar number that BA has of 744s, and we don't see the same numbers of threads on FT about scrapped missions and diversions on that fleet type; hence my question "is it just a perception (more eagle eyes on BA operations, etc. etc.)" and request for data. On the FT board, however, we have found data to confirm the total and utter unreliability of AA's 762 fleet of 12 frames (being phased out within the next 12 months or so) doing JFK-LAX/SFO.