I'm no authority since I just heard about edgeless but Peerplays actually predates that one (edgeless isn't first). But as far as I can tell, there are a few differences. The profit sharing aspect is not the same, Peerplays is based on tech that currently scales better than Ethereum (Graphene is capable of 3300 tps according to the last stress test), and the edgeless timeline is a bit further out according to estimates from both camps. They do have a blackjack beta but Peerplays has a testnet up that I believe will eventually include its own decentralized exchange (someone should correct me if I am wrong). Peerplays also has plans to sidechain to other alts but I am not sure how prioritized that aspect of the project is.
Hope that helps...and I am not really too familiar with VDice.