I didn't read her piece on new highs either, but have been thinking about this measure (and new lows).
If we stay at this level for another 3 trading days, then Nasdaq will be at a new 1 yr high. That being the case, it seems intuitive that a higher number of stocks will be making new highs and a lower number new lows, than say a previous local top for instance Mar 21 this year. But to my mind that doesn't make this local top any more bullish than the last local top. Am I making sense? I wouldn't be surprised if I am not <g>