I'd say those numbers you link to are pretty amazing for a garbage collected language. Compared to Java, SBCL is roughly on par, with some benchmarks 2-3x slower and some 2-3x faster.
edit: To clarify, I'm not saying SBCL makes Common Lisp the fastest language (I don't even think that's a meaningful statement). But to be within 2-3x of the JVM or C (and even outperforming C in some scenarios) certainly puts SBCL among the fastest language implementations. All the other ones you mention (C, C++, Go, Java..) are indeed also among the fastest. :)
edit: To clarify, I'm not saying SBCL makes Common Lisp the fastest language (I don't even think that's a meaningful statement). But to be within 2-3x of the JVM or C (and even outperforming C in some scenarios) certainly puts SBCL among the fastest language implementations. All the other ones you mention (C, C++, Go, Java..) are indeed also among the fastest. :)