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AVW is the total voting weight on the network which is, when boiled down, coin weight + magnitude magnitude weight. I might be missing something but I think it's vote weight.

The full quote is:

Active vote-weight (AVW) is a calculated average of the vote weight actively securing the network for the duration of the poll, plus the network magnitude, less the magnitude of any crunching pools.

I'm pretty sure you just confirmed what I was saying.