rewrite ambiguous comment

It took me a few reads, but it eventually swapped from bunny to duck.

BUG=skia:

Review URL: https://codereview.chromium.org/913733002
diff --git a/tools/CrashHandler.h b/tools/CrashHandler.h
index 606e81e..d1275c7 100644
--- a/tools/CrashHandler.h
+++ b/tools/CrashHandler.h
@@ -4,8 +4,8 @@
 // If possible (and not already done), and SK_CRASH_HANDLER is defined,
 // register a handler for a stack trace when we crash.
 //
-// Currently this works on Linux and Mac and Windows, but on Linux, you will
-// get much better results than we can deliver by running "catchsegv <program>".
+// Currently this works on Linux and Mac and Windows.
+// On Linux, our output is garbage compared to catchsegv.  Use catchsegv if possible.
 void SetupCrashHandler();
 
 #endif//CrashHandler_DEFINED