I think one should not exclude children from divorced families automatically, but one would need to be far more circumspect and cautious.
The crucial issue will boil down to whether the prospective shidduch understands why his/her parents divorced (for example the behaviour patterns and attitudes that lead to a broken marriage) and is motivated not to repeat the mistakes.
The research that was quoted by Lior only tells a part of the story. A far more important issue, which we are too quick to pass over, is to understand how those who manage to build successful functional homes (even though coming from broken homes themselves) manage to do so.
It seems that a motivated person (from a broken home) may be better than an unmotivated person from a dysfunctional unbroken home!