TBW must have been a flash-in-the-pan, like the 60s BATMAN -- a surge in the early ratings followed by a quick falloff.
Seems it was #6 overall during its first season, dropping to #14 in the second (which is still not bad).
Episodes from the first two seasons were regularly in the British Top Twenty most-watched shows but, yes, the sole #1 occurred early on with the
Angel Of Mercy episode.
WW was more of a middling success, but beloved by an important demographic: kids. That Gen X kids' nostalgia carried the show's fame further than most of its more successful peer shows.
Absolutely. I imagine
The Bionic Woman was justly considered the more mature of the two series in its appeal which possibly affected when it was broadcast. Certainly in Britain I have a feeling it went out a little later in the evening when it would reach a wider audience than WW's teatime slot.
It's also helped that the character's iconography is more instantly recognisable and
WW has never really been away from one medium or another in the time since (mostly comics, but still),
Pity Lynda so thoroughly distanced herself from the show in the 80s and 90s, or we probably would have gotten some TV-movie reunions as with the Hulk and the bionic duo.
And since the reunions you mentioned had an emphasis on crossovers with other characters from their universe, perhaps this could have been the chance for crossovers with other DC superheroes. I have a feeling Burt Ward might have been equally dismissive of the
Batman series at this time, and I'm not sure Chris Reeve would have done it, but perhaps they could they could have settled for Helen Slater and get Adam West to do a cameo. On second thought, perhaps best would have been to go
The Incredible Hulk movies route and introduce a couple of DC characters unseen in live action at that point.