>>59
call/cc is way more powerful than
goto (it's also typically less efficient, but this depends on how it's implemented, it's possible theoretically to implement it more efficiently, but that may come at the cost of total program speed(implementation-dependent)).
Common Lisp's
go special form and C's
goto will typically just get compiled as an unconditional jump (possibly with whatever stack adjustment is required, if the implementation makes use of a stack).