Yes, 19" is narrower than 20.5"
However, I just don't see how 19" can be considered 'narrow'
I'd say that's plenty wide, especially considering the arm rest folds down to sleep.
But, we are living in an obesity epidemic. bigger portions, less exercise, more sedentary lifestyle... so the BUSINESS rationale for reducing seat width doesn't quite add up.
Maybe UA is trying to do a civic duty by indirectly telling people to LOSE WEIGHT... LOL
But, then again, that would be a mixed message... Wasn't there a thread a bit back about some guy claiming "United is Making me FAT"? ... LOL