Did you establish two different usernames with two unique email addresses? This is what you have to do to accomplish what you want to do.
Example: I have two blogs under one username. I want to remove my name from the second one all-together or at least be able to change it to another name that it is posted by. Is this possible? I really don’t want my full name being published for the second blog as it is going to be read by strangers.
(1.) In your second blog go to => Dashboard => Options => Privacy and temporarily make the blog private. Check the spot for __ I would like my blog to be visible only to users I choose and click “update options” to save the change.
(2.) Log out of wordpress.com
(3.) Sign up for wordpress.com using a different email address, and using a new username. Choose a new username that is not the same as any of your blog names. Do not create a blog, just a username.
(4.) After you finish responding to all the confirmation emails and whatnot, log out of wordpress.com
(5.) Now log in as your original username and go to your private blog’s => Dashboard => Users.
(6.) Add your newly created user as an Administrator.
Set the Role of checked users to: Administrator. Type the e-mail address of your newly created user WordPress.com user to add them to your blog.
(7.) Next log out and then log in to your private blog as your new user.
(8.) Go to => Dashboard => Users and delete your original username from the blog.
Remove checked users.
(9.) Go to => Dashboard => Options => Privacy and make the blog public again.
__ I would like my blog to appear in search engines like Google and Sphere, and in public listings around WordPress.com.
__ I would like to block search engines, but allow normal visitors
You may want to share the new username with your regular readers of your second blog via private email.
What do you mean by "not allowing me to use the 'stats' for the other blog"?
There is a drop down selector exactly for this purpose
Blog Stats for __________