[plt-scheme] Question about call-with-values

In the R5RS documentation on page 34 (section 6.4 on
call-with-values) the following example is given.

    (call-with-values (lambda () (values 4 5))
                  (lambda (a b) b))

I can achieve the same effect with

    (apply (lambda (a b) b) ((lambda () '(4 5))))

I'm trying to think of a more complex example where
"apply" couldn't synthesize the call-with-values form
but can't.  Is there something special about call-with-values
that can't be readily achieved with a similar "apply" construct?

Thanks!

John

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