Originally Posted by
zkzkz
Basic? Basic only earns 25% points (and 0 SQM) and you can't necessarily extrapolate from that by multiplying by 4.
I'm pretty sure [MENTION=25460]NordsFan[/MENTION] knows what he's talking about. Also note that multiplying any 25%-credited distance by 4 would yield a multiple of 4, which 3735 is not.
If that's really the new 100% earning you have to start wondering how intentional this is. I can definitely see 1 or 2 miles difference depending on the reference points but gcmap says it's 3,751 and 16 miles is more than the difference from YYZ to YTZ!
Where exactly is an airport, which is a large place? The control tower? The geographic centre (which itself is a debatable term)? The NE corner of the property? How is the haversine calculation done? Does anything get rounded?
It's not as simple as you make it out to be. WebFlyer gives 3740 as the distance from YYZ to CDG, for example. In the old days, AC would credit 1746 for YYZ-IAH. UA 1747. GCMap was 1748. WebFlyer 1750.
Also, a 5-mile reduction on YYZ-CDG is a far smaller percentage (0.134%) than 1 mile decrease on YYZ-BOS (0.225%) or the massive 0.5%
increase on FRA-BLQ.
The new Aeroplan usually seems to result in lower numbers, but some are the same, and some are higher. That suggests a change in methodology, not a sinister attempt to screw people out of miles.