So I had always assumed that each trophy was worth so much experience so that bronze trophies were worth a little, silver was worth more, gold was worth a good amount, and a platinum was worth a lot.
That made sense to me but then I saw this:

Looking at that and my PSN card:

you will see that we both have just about the same amount of trophies, same level, and both about to reach level 5.
The thing that strikes me as odd is he has a platinum trophy while I don't. Other than, we're both pretty much the same but I would assume that platinum trophy would push him over to level 5.
I have seven more bonze trophies than him, but I assume those aren't worth much. I also have one more gold than him so that could count for something, be he also has two more silvers than me along with the platinum.













