Larger pelvic, smaller heads and 90 pound calves. Also do well in cold weather.
There is good in the breed.
As some stated, disposition has been the breed's biggest problem starting back soon after the first were imported from France.
The breeders that weathered that storm and are still in the business can have some decent cattle.
They are long-haired. But that can be a problem in the summer because some won't shed their hair in the heat of summer.
They have sold themselves as larger pelvic area cattle. Reality is, pelvic is a frame measure and it is generally positively correlated with frame score. So any bigger frame breed will generally have larger pelvic areas.
I can send you contact info of a breeder that raises some really good percentage salers bulls, pm me and I will get you phone contact info to you. Guy raises good cattle with really good performance.
