I actually raised this question/issue to them like 4-5 years ago already...they used different wordings in the T&C for Asia Miles awards vs. oneworld awards (or oneway vs. roundtrip awards, I don't remember exactly)...so I assume they explicitly want to make the distinctions clear...but in fact for all these awards their calculations are all the same, you need to add the mileage from each segment together, segment by segment...and not just look at the origin and destination, as it seems to imply (quite clearly without doubt) from their T&C wordings for some award types...

I suggested them to update the wordings to reflect the truth...but I guess those outsourced service center staff aren't really that interested in taking this kind of comments that are quite out of their job duty...and the wordings are still all the same after the 4-5 years...