Because I know what Toney can do with top notch opposition and Calzaghe better be able to do the same with top not opposition (which is unproven, except for once (maybe)). So with that in mind, of course I would lean towards Toney.
YOu can't tell me that fighting all these no-name fighters doesn't take credit away from a boxer. A truly great champion that wanted to fight the best/could have or would have by now. That is not debateable. He is in love with fighting at home against poor opponents. Which is fine and I respect that. But when you compare prime fighters against each other, I would take it into consideration. It is silly to even compare prime vs. prime fighters against each other without taking into consideration the opponents opposition in the past. If you didn't do that what do you want to base your judgement on? Sparring? Workouts? Interviews??