FlyerTalk Evangelist
Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: BA Silver, TK E+, AA PP, Hyatt Globalist, Marriott LT Plat, Hilton Diamond
Posts: 13,043
Considering you get 750 miles as "fixed miles" with IB+ instead of the standard 500 miles with most other airlines, it would make sense to have 1.5 Avios per USD on the variable miles scheme... (since VS have 2 miles per USD and 1000 fixed, this logic makes sense)
The Hhonors website seems to have a typo, at 1 Avios per 10USD, which doesn't make too much sense.