I believe the 1.5 H6 is not going to be so popular and that you may have a similar resale later down the line. Drive would be a little more responsive on the Oshan X7 but more features in the H6. I think build quality is similar between the two.
If you care a lot about potential self driving then Haval got you covered a little better with its lane keeping. The Oshan is quite nimble though so its decently fast if you care about that