I realize I am waaaaaaay late to the party, but I've been researching that red Gibson that TVZ played and wanted to contribute what I've found.
I believe it actually is a J-45 based on the double rosette around the sound hole. Between image searches, for sale listings, and anywhere else I could think to look, every single B-25 that I can find has a single, simple rosette. I'll wholeheartedly agree with everyone though that the body size is difficult to pin down, staring at that video even now I'm second guessing this post. But the clear-as-day double rings around the sound hole call it for me.
Just my $0.02, hope it helps...