supply on coinmarket cap is also 62,585,264 AMP * which one is it?
The total available now is 62 million. There are additionally some 900 million locked away. There's still only 62 million essentially (soon to be around 87 million after crowdsale AMP released), because counting the amps that are locked up now would be like counting ethereum's inflation for the next decade and adding it to the current number of eth on the market. Also, those additional AMPs won't go to miners but rather to support the ecosystem. For example they have some % set aside for dapp development, marketing, future development, etc - so whenever those additional AMPs are released, it won't just be standard inflation because the additional AMPs will help the ecosystem itself grow.
I think the team holding so much is always going to be sort of a dark cloud hanging over this project. Even after the burn it's a huge amount to be released/sold at their discretion. They just raised almost $5m, do they really need 900m AMP in order to further fund development and get the project to the point where it's self-sustaining and successful?