Dont they need LOS and range to neut too?
But yes, in any tank situation where you are outnumbered, there is the same issue.
If your tanking (sheild or armor) the other side can cycle attackers in and out of range/LOS maintaining continual pressure on your tank while they break off and regenerate.
So to win with a tank, you have to have BOTH range and terrain advantage, as well as there being an upper limit to the number of bots you can offensively tank.
But that in itself again favors the armor tank. NIETHER tank is acutally going to kill anything if the light bots cycle in and out, but the armor tank can fire the whole time, while the shielded tank would be hard pressed to find any point to drop sheilds to fire.
But you did answer the question, the sheilded tank would be harder to kill because of HP/AP, and you'd need many more than (2) bots to do it. Thanks