Reduce Teleporter Range or increase costs.

[Dr.McNinja]

Its not the 100% only counter.. For staters, having close combat weapons to beat them or troop command to augment your hp can beat an enemy teleporting, as well as choosing where you move. I have found it workable to avoid an enemy teleporter (as air) by tricking them into where i would go etc.. its all mind games. Possibly going by a rune if you are on full hp for quick heal or if you are escaping, then try to 'juke' them i.e. run a different path to the one they expect. As an air tank you must understand the map much better to make use of all terrain, knowing how big the areas are and stuff. I'd say a teleporter is around 50-75% counter to a tp.

As for mindgames, tricking the enemy into teleporting to you can work. Moving in odd directions also works very well. It means the enemy must 'lead' less or risk going off, but at the same time if they dont lead, they could fail to catch up.

Not that simple.