基于简单的 TDI 规则进行交易 (Trading based on simple TDI rules)

Anyone ever tested trading based only on simple TDI rules?
green>red: BUY
green<red: SELL

Sounds too easy to be true, and thus probably is, nevertheless I am fiddling with this in excel and am getting interesting results.

I am using M15 historical data EURUSD
Calculating RSI13 on close prices
Then calculating its 2-period SMA (green) and 7-period SMA (red).

Over a month (approx 1500 data points 24/7 trading) I get >4500 pips (LOL). Substract 2pip spread (approx 700 pips on 350 trades) and swap not accounted for, still a good result.
So, where is the bug...?

X.