Board Thread:The Flash discussions/@comment-9346948-20160420004341/@comment-3423279-20160421062743

Zoom said he couldn't make a speed mirage that goes from Earth 2 to Earth 1 while still appearing realistic and in both places that are extremely far away from one another.

Eobard made realistic speed mirages yes, but he only did so in the space of about one room, not across dimensions and cities.

Barry made a speed mirage while still only able to move at about Mach 2, Zoom is way faster than that.