Yeah, when Elena plays the best has a penchant for either taking it to three sets (and winning a lot of the time) or going down in flames. I'm sure max can put it more eloquently, but it depends on which golden goddess comes to the court on any given day.
But Hingis has gotten comprehensively beaten by a lot of top 10 players already.
2 and 2 to Momo
3 and 4 to Sharpie, although she crushed Sharpie first, so it neutralizes
3 and 3 to Henin-Hardenne
2 and 0 to Dementieva (most shocking of all, except to her fans who KNOW she's the best)
elena dementieva, serena williams, caroline wozniacki, ana ivanovic
david nalbandian, rafael nadal, andy murray, gael monfils, jo-wilfried tsonga