MMP kicking KMPs butt for all time frames I compared. Illustrated below, via the URL, is the two year year time frame. Just give the URL a click. Having brought up the URL vary the time frame to whichever time frame you'd like to see. You'll see.
El Paso did outperform MMP but now it is beholden to the Kinder Morgan complex and it is all done now and is now relegated to being a bride in waiting for the day (if ever) that KMP folds EPB into KMP.
No doubt EPB was one of the great stories until Kinder took that story away. The story being the magnificent dropdowns that are no longer available to KMP. Now EPB is being used to undo some of KMP's problems with this recent drop-back from KMP to EPB that should have never been dropped down to KMP in the first place.
But that was then and this now and the fact of the matter is MMP is the big dog on the block now with years of superior growth ahead and EPB is now a memory and a relegation to mediocrity story.