She is a lawyer and has the mind of an attorney. Much better verbally than Ann, who is better at the keyboard.
They're Both lawyers. Ann went to Cornell, and Laura went to Dartmouth. i don't know which law schools offhand. Both have clerked for Supreme Court Justices. Laura was the editor of the Dartmouth Review, and is no stranger with typwriter, or word processor.
Ann is the type of lawyer you'd want planning your defense, or the case for the prosecution, while Laura is the lawyer you'd want presenting it in court. Aside from that there really isn't much of a difference in personality, except for the fact that Laura is VERY agressive in public, while Ann is more laid back, and less inclined to confront.
That was her weak point with Franken. Laura Ingraham would have been likely to walk over and kick the S#!t out of Franken about the second time he tried to talk over her.