In RJ's own words, which you conveniently only partially quoted above, Egwene is one step below the Forsaken and one step above modern day Aes Sedai.

In other words, Egwene lies equidistant between modern Aes Sedai and the female Forsaken. To put it in plain English, she is halfway up the ladder between normal Aes Sedai and the female Forsaken.

So if Moghedien is at 80 and Egwene at 70, then Moiraine is at 60.

Kind of problematic, seeing as Egwene is roughly as strong as Amys and Melaine combined...

The bonfire vs candle comparison is meant to indicate that Nynaeve is in a whole different ballpark to Egwene.

It is hyperbole. It is quite ridiculous for you to suggest that they were trying to compare the candlepower or lumens, to use a flashlight term, of a bonfire to an equivalent number of candles, as you are trying to make out in order to deliberately ridicule this otherwise valid statement.

I understand why you do it, because you have to, in order to prevent your entire fabricated strength ratio from falling apart.

But the reality is that it was meant to indicate that Nynaeve is at Forsaken level, which is as far removed from Egwene's level as Egwene is from Moiraine's.

Just like a burning candle is on a whole new level to a brief, small spark, representing normal Aes Sedai, so a bonfire is on a whole diffirent level to the candle.

It is all there, patently clear. If you have the will to accept it.