Indeed Ian, I agree it’s how it works in practice that is key. That’s why in my experience it is best to have actually used the service before offering opinions.
It may be the same number of seats in the same physical space but that is where a good designer can make a difference. The staggered 1-2-1 works well on that brief as every seat has direct access to the aisle compared to 2-4-2 where you have to climb over someone else.
Coming back to the original topic it seems that most people agree the BA layout is now outdated and therefore surprising they didn’t come up with something innovative for the A380.