For the people that ultimately pay the bills, this is the only thing that matters. They don't give a shit what technology you know or what a nice guy you are. They just want it done. To them, the ability to understand their domain, communicate effectively, and get things done is far more important that how you do it. I regularly hear from people who say, "I need x fixed/working/solved. We use y. If you don't know y, then figure it out."
Languages and technologies are only important to CTOs and recruiters. The point when you get beyond them and start talking to their bosses is when your career will really take off, not when you learn a "better language".