If you look at the 6 guys Henry has fought, its not just that they are inexperienced (as he was starting out as well) but they were generally complete bums.
4-2 Elias Garcia (decision)
6-3 Ryan Hollis (decsion)
0-9 Miguelito Marti (tko)
4-11 Anthony Sessions (tko)
4-6 Sean Henry Barnett (tko)
0-6 Michael Poe (tko)
Two of these guys have zero wins and a combined 15 losses. Four have losing records. The two guys with winning records he took to a decision - not white hot prospects, but middling guys at the lowest level of pro MMA.
I think Henry is taking a massive step up in competition here and I could see this as a disastrous debut. If he got some more experience one step up, perhaps RFA or against a few more guys that could put up a fight, he would be better prepared.
In my mind this isn't some coronation for Henry, he's in for a fight. We'll find out.