I am guessing (based on tweet alone) that you went with CSpring. They pointed you to a real live customer, with experience with both. (They let the customer make the case.) That would probably nail it for me. The other focused on a competitive jab. A bit more desperate.

Caveat: I didn’t follow the links and I don’t know the project (one may be a clearly better fit for what you are doing), and so I might be wrong.