In reality people will adjust their EMA constants every week or so, resulting with bigger profit then year long simulation with the same configuration for all period. Also, bot would earn some profit  even in case if btc price do not rises, but just fluctuates around certain value. This is huge difference than saving btc.

Another thing is that with EMA strategy you are protected against btc price drops. When price drops - bot simply converts your goods to usd. When price rises - goods are exchanged back to btc.

Like this morning when I saw huge BTC rate drop during last day - first thing I have checked is how much did I lost on my btc-e account. My bot configuration now is rather ok, but I did lost around 5% of usd value, until bot converted btc to usd. But its much less then losing 40% like those who just store btc. And awesome part is that if price will rise back to the old value - I will get these 40% as profit.

Soo, thank you Butter Bot, you are doing great job