As far as I am aware, the PS 3 should have a HD component output, which you can use to input into either of your Multibridges. You should be able to get the same quality as you would over HDMI, as you can do up to 1080i over HD component. You *can* get 1080p over HDMI for higher quality, but our products do not support the 1080 progressive formats.
Your further problem using HDMI will be the HDCP content protection from the PS3, as none of our HDMI based products will allow a content protected signal to pass through.
The current model Multibridge Pro 2 and Multibridge Eclipse both have HDMI input and output, whereas the older Pro 1 has only HDMI, and the Extreme has DVI output.
So I think your best solution would be to go component from the PS3 into your computer, through either of your Multibridges.
Technical Support Consultant
Blackmagic Design EMEA