I'm not sure if its safe to say that Monero "won" the "race". Dash is already a "winner", making few people rich. Can't exactly recall, but over 1.5Mn DASH were premined in the first 10-12 hours from the launch, so...
XMR on the other hand is heavily pumped in the past week and I don't think that this would last for too long. Don't know almost anything about Aeon, but comparing it with dem both is not serious imho.
Premine is actually mining pre-launch and is applicable to several cryptocurrencies, coinmarketcap indicate those cryptocurrencies with a *
Dash has never been premined, that is a fact that can be verified by studying its blockchain and by checking coinmarketcap -->
http://coinmarketcap.com/Instamine is a broad definition and includes a number of cryptocurrencies like Dash where its first 24 hours where accidentally (due to faulty code together with massive cloud mining interest) a lot of coins were generated, Monero where due to the release of intentionly slow mining software an unfair advantage was created by those who used optimized miner software and kept it a secret and Bitcoin where 1 million Bitcoins were mined
by one single person / group (Satoshi). The degree of instamine varies between these cryptocurrencies obviously but they all fit the instamine categorie.
To know more about Dash instamine history :
https://dashdot.io/alpha/?page_id=118
