While both of the these women married for very different reasons, I think the novel suggests that both families would be very pleased with the end results. Looking at Elizabeth's marriage to Darcy, it is rather easy to assume that the Bennets are thrilled beyond belief. Not only is Darcy the wealthiest man imaginable, he is also polite and upstanding, especially in his efforts to resolve the situation with Wickham and Lydia. He has grown as man who seemed haughty, to one that Elizabeth clearly loves, and they would be happy for her.
Even though Charlotte's marriage to Collins is done for financial security and not love, I still suspect that the Lucas's are very pleased with the match. First and foremost, Charlotte will be taken care of, financially, for the rest of her life. Without this marriage, she would have been left destitute upon her father's death. As annoying as Collins may be, he is a respected member of the clergy; he will inherit the Longbourne estate when Mr. Bennet dies; he is under the patronage of the very influential and powerful Lady Catherine. Charlotte is clearly making the best of her choice, and I think the Lucas's have every right to be pleased by her choice.