He never mentioned success in that statement - that part is your own interpretation.
Here is the exact quote BTW: He talks about a standard for the program, not a definition of whether or not it was successful.
"I've self-imposed — no one has imposed it on me — that the minimum standard is a top 25 ranking," Mendenhall has said. "That's what I believe is supposed to happen at BYU. … Expectations are top 25. To do that, you have to win double-digit (games). That’s just a yearly thing.”
If you want to sour, disgruntled and unhappy about things, by all means continue. But please stop making drama with things that Bronco didn't actually say.