Love the idea. Just to clarify if I were to deposit 5BTC and won I would get 10BTC?
1 BTC is the max allowed, to get on #1 and get back 2 BTC you will have to desposit 1 BTC and then 0.01 BTC for example, unless someone else is going to deposit more you will be #1
The 200% will be for the 1 BTC you deposited.
It's also explained on the Leaderboard section on the site.
The top 10 depositors for each week are shown below. At the end of each week, 1st place gets 200% of their largest deposit, 2nd place gets 150% of their largest deposit and 3rd gets 100% of their largest deposit.
For example, let's say 1st place deposited 12.35 Bitcoin over the course of a week. His largest deposit was 1 Bitcoin. His reward is 2 Bitcoin sent directly to his address. Simple!