CertifiedFP
Member
Valkyria Chronicles was a PS3 exclusive game before releasing on PC, so it used PS3 specific APIs.
And of course it means something, from a multiplatform point of view, D3D11 and its shader model adjusts much better to current gen tools and hardware.
There is literally no reason to rebuild a game's renderer for DX11 or above if you aren't going to make use of new features it introduced.
DX9 is much simpler, more supported, the last major version before DirectX started to suffer from Diminishing Returns, and better optimized than any following DirectX versions.