In many of the itineraries I have looked on ual.com to book, I see the following: (Sorry, don't know how to post image).
Depart:
8:45 p.m. Sun., Mar. 10, 2013
Frankfurt, Germany (FRA)
Johannesburg ZA (JNB) Flight Time: 10 hr 45 mn
Award Miles/Premier Qualifying*: 5,380 /150%
Flight: UA7931 Operated by South African Airways.
Aircraft: Airbus A340-600
Fare Class: Economy (Q)
*Miles shown are the actual miles flown for this segment. Fare class, Premier qualifying miles and other promotional bonuses are not included in the total miles shown. The award miles accrued on codeshare flights are based on the operating carrier and their equivalent fare class. This could result in differences between the purchased booking class and the booking class flown, which determines the number of base and Premier qualifying miles and Premier qualifying segments earned. MileagePlus award miles are not awarded for travel on airlines that are not MileagePlus partners. Miles indicated for non-partner flights or flight segments will not be awarded. MileagePlus award miles earned will vary depending on the Premier status of the customer.
Am I reading this wrong? 150% Premier Qualifying

Yet on Mileage Accural Chart for SA:
Business J, C, D 125% 100% 1
Discount Business Z 125% 100% 1
Economy Y, B, M, K, H, S, Q 100% 100% 1
Discount Economy T, V, L, W, G 50%* 50% 0
On a UA Metal flight:
Depart: London, England (LHR - Heathrow)
Arrive: Los Angeles, CA (LAX)
Award Miles/
Premier Qualifying*: 5,456 /100%
Flight: UA935
Aircraft: Boeing 777-200
Fare Class: United Economy (Q)