Thanks for posting,
mitrakhanom1!
This is a great example of the dangers of 'hairsplitting'. The LSAT trains us to be laser-focused on language differences - small changes in wording can reveal huge changes in the
true meaning of a phrase.
However, we can take that obsession with language differences too far.
If I say that Mary bakes more amazing cakes than Betty, it would be totally reasonable to say that I think Mary is better than Betty, or superior to Betty, in some way. "Superior" is just another way of saying "better", and more amazing cakes is, at least in one respect, "better". If Barr Motor Company produces more winning automobiles, it's not unreasonable to refer to that as Barr being "superior".
Mahamansoor raises a good point in regards to your premise rephrasing, as well. The real key to eliminating
(C) is in the word "proving". (Here's where a single word makes a BIG MEANING difference!)
To
prove something, we need some support for it. The advertisement just
says that Barr has a tradition of pride - it's a premise offered up without any support whatsoever. The author hasn't
proved it, he's just
said it!
Fundamentally, we
prove things (or try to prove things!) that are
conclusions (or intermediary conclusions). Since the statement that Barr has a tradition of pride is not backed up by any support, the author hasn't proved it (or even tried to prove it)!
For the sake of future students, let's take a quick spin through the remaining incorrect answers:
(A) Repeat customers are never mentioned.
(D) This is the opposite of what the author is doing! The author suggests that the pride determines the success - if anything, the author might be OVERstating the role of pride!
(E) The author suggests that Barr is like Austin Stables in its tradition of pride. He never mentions how old the Austin tradition is, so no comparison of length is ever implied.
Please let me know if this helps clear up a few things!