Isn't that exactly what it says?
It does indeed say what it says.
Let me try to put this into context and then ask my question another way.
I was playing a game against someone and cast FoTA. The opponent refused to take a pinning test because his unit didn't suffer any casualties. We then consulted the pinning rule in TBGB. The rule says that when a "unit inflicts casualties with pinning weapons, the target must take a Leadership test.." His arguement was that pinning could only be caused if a casualty was caused by a weapon that caused pinning.
In essence, his argument was that FoTA was a pinning weapon and that pinning tests only need to be taken when wounds are inflicted. My question is: is his argument right, or does fury of the ancients require a pinning test regardless of whether or not it inflicts a wound?