The wrap-around headlight guards on the C4x4 grill guard would not stand up to a deer, unless it was bambi or something (vs bambi's folks), and even then the headlight guards would probably be destroyed in the process. The center grill guard should be OK though, but overall I wouldn't consider it to be "deer rated".
C4x4 does "custom" work though, similar to what AJ does/did, C4x4 just decided to make some "standard" products to offer. Just look in their Customers' Rigs section, they've done products for Toyotas, Fords, Scouts... pretty much whatever the customer wants. Just give Mike @ C4x4 a call (works better than email) and tell him what you're interested in.
To really have a grill/headlight guard that's going to be "animal rated" the headlight guard sections have to connect down to the bumper, like the ARB bullbar and that bumper above from AJ.