I was looking at the Dota2 map and I am sure of what I am saying. Although I do not know if this is intentionally kept that way. In the middle lane the distance between the tier 2 tower to the tower 3 tower (first tower at beginning of dire base) is much more distant than that of the Radiance side. This provides an advantage to the dire side as they can push the radiance base much faster. Also if you are dead, the dire can push in faster into the radiance base rather than at their side, where to cover that distance might take 1-2 seconds or 5-7 seconds ( when creeps are there).

I attached the map showing the distance with red circles. In the other map distance x is not equal to y , distance z is not equal to a. Is this intentional??
Attached Files