In my opinion it does not.  First off, the MA's are too steep and thus subject to a big whipsaw, just like you saw in late 1997, see the chart.  Just like the EOD mechanical systems in the Premium Content section; anyone who has traded those systems know that you have a high probability of whipsaws when the MA's move up or down strongly in a V-ish fashion instead of coming out of a base. 

Also, when I looked back over many years, the 50 and 200 EMA crossovers worked better than the 13/34 week crossovers and the 50/200 EMA are not crossing one another.

SPX daily with 50/200 EMA

However, again what I do not like is the vertical nature of the MA's off the bottom.  Long term trends in the market are defined by the larger degree wave count, which still tell us that this is a large bear market rally instead of a new fresh bull market.  I still view this is a large degree bear market rally.  Remember our targets for the SPX since March as been 1000 t0 1100.  Well, since the SPX has not even made it to our first price target, why would I change my long term analysis yet?  Back in March I said that the market would rally up high enough and far enough that it would cause the masses to think that a new bull market has started....well that's exactly what we are setting.

However, if you disagree and are dead set about the 13/34 weekly EMA crossover or 50/200 day EMA crossovers, then fine, but you MUST adhere to discipline and change if the MA's were to whipsaw and crossback to the downside.

When I looked at the past 80 years in the market over the weekend, I noticed that the MA crossovers worked well during secular bull markets and NOT during secular bear markets.

Here's a chart of the Dow from the 1970's :  This is an example of when the MA's would whipsaw you to death.