The information provided here does contradict the information on UA's website, but based on the experience of many, many people who have posted here, UA's website info is not correct. And challenging it after the fact has proved fruitless.
As far as Tango fares are concerned, AC recently made changes to the Tango fare program (6/15) where they reward partial RDM's. And new Tango PLUS fares receive full RDM/EQM credit. These were changes made to the Aeroplan program - whether they apply to UA remains to be seen, but in the past AC used the same rules for giving UA miles as they did to members of their own program, regardless of what is listed on the UA website.
Only time will tell for sure, but one thing for sure is that what is listed here is much more accurate and up to date than what is listed on united.com based on the real experience of UA flyers travelling on AC.