The 130 has a higher gain, 1.6 as opposed to the 1.0 of the 100.It has the potential to be brighter but I would have thought the 130 would be lower contrast when your room is dark. I'm still running my old Gray Hawk from when I had a DLP projector. I think its gain is around .9.
Glad the mix up was cleared and that you are enjoying the screen. I guess you can keep the other one as backup in case something happens to the original or you can use it for another room if needed.
I would love to give it to a charity that needed it but I don’t know a charity that needs it.