It seems wrong info. I also had experienced such thing with me. I Boarded 12448 from Mahoba (actual deparure is ~5.00 and it was running late by 1.30 hrs) upto Manikpur (arrival time is 8.35). This reached Manikpur at 9.30 hrs (covered 30 minutes). When next day I checked the status it was shown on RT arrival at Manikpur.