"About half-way up" is an approximation. If you're looking up, you usually don't take the lower floors into account, especially if you're panicking. The aren't in your direct line of vision. Then there's that massive slab at the top of the building with the name of the hotel on it that looks to to be several stories high. So it's not surprising that with all the chaos, people thought the shooter was half-way up the building. If you asked them to clarify that, some might say he was further up than that, but others probably wouldn't.
Agree. It’s not confirming at all. Still odd. NO ONE saying “at top.”
I keep going back to the fact that no muzzle flashes are around in any of the videos. Anywhere. Still waiting.