Maglincer a user from Reddit experienced a bug while he was playing a public game that sent him a PvP match summary menu. Unfortunately there isn't anymore information but it's still interesting to look at.
Now if I had to guess I would say the top left recaps the experience, gold, PvP tokens and renown gained from a battle. I have no idea what the renown stat is but I assume it will be similar to arena points from World of Warcraft and used as your ranking points. PvP tokens is the one thing we actually know a little about as people have datamined information related to it. In particular this string exists in the client "TIP015 - Visit Gryffith the Warmaster at New Tristram’s Slaughtered Calf Inn to redeem PvP tokens for items." Which clearly means PvP tokens will be used as a currency for PvP items.
The bottom left is perhaps where your team members portraits will be along with their stats from the battle. Lastly the right side with takedowns seems to be a place to recount all the kills and maybe even rank the top 3 players from the match.