"He and her Rawdon were of the same age, and so like," Becky said in a voice choking with agony; whereas there was five years' difference between the boys' ages, and no more likeness between them than between my respected reader and his humble servant. 
"He and her Rawdon were the same age, and so alike," Becky said in a voice choking with agony; whereas there was four years' difference between the boys' ages, and no more likeness between them than between you and me. 