Forum:Splitscreen Co-op glitch?

I've been playing through 2p split screen co-op with my son. We both log in, I press start so am first player, he joins and then we start. When we turn in the completed missions we both get the experience and money without problems, but when I happened to look at the "trophies" section in the menu, where it shows how you are progressing through some of the "extra" things you can do to get experience, it shows me earning $465000 and he shows $70. Apparently we both get paid, but it doesn't credit him for earning money for experience. Is that a glitch in splitscreen?