It would just confirm that Lucci is another Apoo and Zoro is just fighting with Lucci because of plot device.
If we pay attention, Oda LITERALLY removed Zoro from both Kizaru and Saturn, at the moment Zoro and Lucci left Labophase, Kizaru entered Labophase.
In other words, Oda just occupied Zoro with Lucci to develop Kizaru and Saturn so that Zoro could later return to the main fight