User blog comment:Arrow7000/Batman (Terry McGinnis) vs. Iron man (MCU)/@comment-5271520-20120709045320/@comment-5271520-20120711033340

Iron Man's suit is powered by a highly efficient energy source. While he is in the suit, his stamina is greatly increased beyond human capabilities. For all the gadgets in the Batsuit, it is still a suit without an energy source. If Terry becomes tired, his performance will be affected.