It doesn't imply any kind of value for ALDW. They are different assets in different locations.
It doesn't even imply a valuation for NTI as we were not told how much of the purchase price was for the general partner interest versus the units. So you are wrong on two counts
Agreed, NTI is in a different market, use Canadian crude and Bakken. ALDW is in rural North Texas use Permian and Eagle Fort crude. The only possible but none the less remote connection is the General partner own a 15Mb/d refinery in San Antonio. But the San Antonio and Lubbock are too far from each other to really compete. GOM refineries could compete with San Antonio. But ALDW is too far from the GOM to get real excess gasoline dumping from the GOM.