Thanks for the link. It contains more interesting information. E.g. look at the huge differences in some 3DMark subscores. That guy here possibly tested on battery power w/o dual graphics kicking in.
And there are lots of signs pointing at different posters. Only the country is the same. Different environment, photography style, dirtiness, benchmark results, etc. If you look closely at CPU-Z, you'll see different RAM manufacturers.
Just look at the Extremepcs "NB-15AB030AX". I don't know any model of the human mind explaining such differences in behaviour.
Didnt think about the possibility of being on battery, there will be some tests here and there by some people given that it s already on sale, we ll soon have an idea..
As for iGPU tests the laptop has a single 8GB RAM stick, not a bad idea from HP on a consumer point of view since increasing RAM is cheaper this way.
http://www.extremepc.in.th/review-hp-pavilion-nb-15ab030ax-amd-a10-8700p/