1Password - Intelligent password same pattern and length

Thanks for the explanation @shaywood. With the huge numbers involved, intuition is of little use—you've got to do the math. So the patterned password is about 20,000 times easier to crack than the truly random one, if my math is correct.

I now understand (I hope) that the patterned password is intended to pass muster with sites/apps requiring a minimum length (maximum length limits can still present a problem), at least 1 lowercase letter, at least 1 uppercase letter, at least 1 number, and at least 1 symbol. Seems like the generator could still strike out by chance if it produced all lowercase (or all uppercase) letters or if it produced only numbers and no symbols or vice versa. Not likely but possible.