No, they're not OVAs. OVAs are not just the material themselves but also the market for them. While we do have direct-to-video animation, it is not the same in terms of budget or execution. We simply do not have an OVA market in America.
Attempting to call something an OVA is clearly a dishonest way of trying to associate it with the image of lavishly animated features such as Bubblgegum Crisis and Macross Plus.
Shadow Chronicles is more like another failed pilot for a TV series that will never exist.