What did Cherry learn about the Greasers? What did Ponyboy learn about the Socs?

Really, what both kids learn is that the other gang members are really pretty much like themselves.

The main thing that Pony learns about the Socs is that they do not feel like they have it made.  They feel like they have problems too.  He also learns that Cherry, at least, thinks that the Socs are emotionally cold.  She says they do not really feel things the way the Greasers do.

I think that Cherry learns mostly that some Greasers are nice like Johnny and Pony, not like all arrogant and somewhat violent like Dally.