An L-1011 -200 freighter will only carry 125,000 lbs of cargo. A DC-10 -30/40 will carry 180,000 lbs. A DC-10-30 will gross out 100,000 more than a L-1011-200. 474,000 vs. 570,000.
Equal weight ,equal engines the fuel burns will be fairly close. but the DC-10 is a better plane for the specs, but the Tri-star is a much better plane technically.