I disagree, but not entirely!
Of course there are differences even within the breed, but Angus and Red Angus aren't typically the "bottom of the milk barrel"
The Charolais, Chianina, and Limousin breed types tended to be high in growth rate/mature size, high in lean to fat ratio, older at puberty, and low in milk production.
Table 5. Characterization of Sire Breeds for Four Production Traits1
1.Breed Group
2.Growth Rate and Mature Size
3.Lean to Fat Ratio
4.Age at Puberty
5.Milk Production
====================================
1. --------- 2.-----------3.-----------4.----------5.
Herfangus-XXX--------XX----------XXX--------XX
Charolais--XXXXX-----XXXXX-----XXXX------X
Chianina---XXXXX-----XXXXX-----XXXX------X
Gelbvieh---XXXX------XXXX-------XX---------XXXX
Limousin---XXX--------XXXXX-----XXXX------X
Maine Anj--XXXXX----XXXX-------XXX--------XXX
Salers------XXXXX----XXXX-------XXX--------XXX
Shorthorn--XXX-------XX----------XXX--------XXX
Simmental-XXXXX----XXXX-------XXX--------XXXX
http://www.ext.vt.edu/pubs/beef/400-803/400-803.html#L2