OMG....science is not your forte...that is not talking about the measurement of dark energy....it's about the gravitational effects of universal mass contributions...of course dark energy causes an effect...as does ordinary matter...but the measurement of gravitational effects on universal expansion is not the measurement of dark energy, dark matter, and ordinary matter...
Here is how science measures gravity....
Fgrav = (Gm1m2)/d2
Show me how science measures dark energy....????
Besides which. I could have just as easily used the 2.5% of physical matter that science knows exists, but could not detect to show your argument was erroneous... They still included it under the name matter though......
http://spaceref.com/astronomy/what-is-the-universe-made-of.html
Matter known as ordinary, which makes up everything we know, corresponds to only 5% of the Universe. Approximately half of this percentage still eluded detection. Numerical simulations made it possible to predict that the rest of this ordinary matter should be located in the large-scale structures that form the 'cosmic web' at temperatures between 100,000 and 10 million degrees.
Either way you have egg all over your face...