I’m far from a signature expert, but I have been loading up on State CWS stuff lately, and one thing I can say is that if this dude faked some of these, he went to a ton of effort. The TA, Bednar, and Rowdey sigs are spot on.
Aside from that, for me it comes down to what you’re planning to do with it. If you’re wanting to flip it, obviously some due diligence is important. On the other hand, if it’s going in a personal display case and it’ll eventually be handed down to a family member… who’s to say it’s not legit? I’ll also add that these complete team signed items are getting harder and harder to come by for what it’s worth