To compare is to examine, judge or say how far persons or things are similar or not similar.
We use ‘compare to’ to suggest resemblance between things that have different natures:
Death can be compared to sleep. To compare death to sleep is to point out the likeness between two states that are essentially different.
Yours is not to be compared to mine. (That means yours is quite different from mine.)
We use ‘compare with’ to suggest resemblances between things that have essentially similar natures:
This cannot compare with that = (This is far different from that.)
Peter cannot compare with Jones. (= Peter is not nearly so good. / Peter is quite different from Jones.)
Your essay cannot be compared with Peter’s. (= Your essay is not as good as that of Peter.)
You can be disappointed with a person.
I am quite disappointed with her.
Disappointed with / at / about
You can be disappointed with / at / about something.
I am quite disappointed with my performance. OR I am quite disappointed about my performance. OR I am quite disappointed at my performance.
You feel sorry about something that has happened.
I am sorry about your results.
You may also feel sorry for /about something that you have done.
I am sorry about disturbing you.
You feel sorry for a person.
I feel sorry for him.