If you're comparing your split to a 3 day routine then it will allow you to do greater volume and therefore probably be more beneficial.
If you're comparing to a 6 day all body routine then I would favour all body over a split as you'll be working each bodypart twice as frequently as the split and with at least as much volume overall. Some people might not like training each muscle everyday though so I guess it comes down to personal preference.
Hope that helps
Rob