Thanks very much indeed, Mutt!
I was thinking about DUB to HKG nonstop; HKG is one of three Asian routes being looked at by EI; SIN/KUL are clearly out.
Using HKG and working on an estimate of about 12h (i.e. the figures you provided), the payload is effectively around 280 pax (and bags), but no freight ... not great for a huge cargo market. 5t less freight from 28, but to all intents and purposes, you have to plan for 28, being the most frequently used runway?
Incidentally, why is the 28 MTOW lower? Slope? Obstacles (none that I can think of!)?
I understood max reserve power to mean "full welly"; I came across this term some time back; is it no longer used. Apologies if it's not correct!