Testing, Testing, Testing... RSI vs. MA Crossover on Hold

I was testing my theory on whether or not RSI could beat a Moving Average (MA) Crossover in terms of early entry and less false signals, when I got sidetracked by working out the most suitable MA Crossover settings for EUR/USD exchange. I made it so that for every signal I would enter a trade and close my previous trade (signal-to-signal). The results I came up with rather poor. My favorite MA combo's were 5/8 and 5/13, and both did not perform well on the 15 minute timeframe or the daily timeframe (I chose these two timefames because I would use them the most).

The both 5/8 MA and the 5/13 MA Crossover's did produce a profit on the daily timeframe, and this profit does include spread and swap price. The 15 minute timeframe, however, did not produce profit if the spread and swap price were include. So one could make a cautious assumption that a MA Crossover does not fair too well in intraday charts, but rather in daily, weekly, and monthly charts. 

Now, this does not mean that MA Crossover could not work for intraday charts. For my purposes I hoping to find a indicator that doesn't require any or very little filtration. Currently I'm reading the book Millioniare Traders by Kathy Lien and Boris Schlossberg, and they talk with a man who has made good use of the 5/13 MA Crossover on 30 minute charts. So unless the man was lying it would seem that it is possible to work with MA Crossover's in intraday charts. No doubt the man applied other methods than just a MA Crossover, but unfortunately it was not mentioned in any sort of detail.