The only real difference, most of the time, is the return for your money.
The only difference between the two men is seven years.
But that was not the only difference between the two men.
"The only difference is that we will be able to show and do more."
The only difference could have been when you told me yourself.
The only real difference is which one you know better.
The only difference is I look a whole lot older now.
"The only difference is that 30 to 40 million people will be watching."
The only difference between these two rules is who makes the second move.