His test didnt really prove anything about his armor's resistance to grenades and RPGs.  Shrapnel and shaped charges are a lot different than dynamite strapped to your armor, and shotgun pellets are about the easiest projectile to stop.  I'd like to know what specific round they were using for the 7.62mm testing.  And I think he was talking about M855 rounds rather than M995 when he said "AP 223" rounds....  basically, it wasnt as impressive as he leads you to think.  Now, if it took 50 rounds of 50BMG rounds without failing to stop any, then I'd be impressed.
That said, I am not against this stuff being tested.  Just that it isnt a sure thing.