they were on one of my planets attacking me when my fleet arrived, all the sudden they did a "purple" jump away from the middle of the gravity well....they were TEC if that has anything to do with it but i can't seem to find that in their tree...is this a way of making hte AI harder or something else
also whats a good strat for fighting unfair vasari on a medium map
Was there a phase line between the two planets? Maybe they were greatly displaced on the z-axis, so what looked like a jump from the middle of the well was actually at an edge on the z-axis, which would have appeared to be within the gravwell from the top-down x,y axis.
No, there is no magic teleport ability. There is no other way to tell what happened unless you have a replay (not that I have any luck in playing replays in 1.12, they are brokenish).
There is no secret to fighting Unfair Vasari. It is the same as fighting Hard Vasari, just requires 33% more skill. You just need to dig for posts teaching you how to play your race of choice better.