Originally Posted by
frankvb
You would think so, however the small print of the BA "Price Promise" refers to exactly the same conditions, i.e.
exactly the same booking code. aa.com will simply sell you a cheaper booking code/fare, so BA doesn't have to full fill it's fairly empty "Price Promise"

At least that's what I make of the T&Cs.
Not IME.
The price promise refers to the same fare conditions, but as fare conditions are all the same for most ex-UK domestic and European fares except fully flexible, it doesn't matter if aa is looking at "O" class and ba is looking at "V" class.
It also refers to the same class of service, which means economy, premium economy, business or first, not O, Q, V, M, H, J etc.
Trust me - I've claimed successfully a number of times, athough it generally requires persistence and a lot of patience.