Zeto shook her head at the questions. "The best I can give you are educated guess... and that is exaggerated. The geth have been beyond the Perseus Viel for a while. This is the first time they had showed up in... I believe around a hundred years. The geth could have upgraded themselves and their equipment in a countless amount of ways in that time. What I do know is that they could fold their legs against their bodies and take less space... so they could be packed in tight... but the target could suggest otherwise. Dr. T'Soni is not a soldier first an foremost and therefore could not warrant too large a force to obtain her. If I were Saren, I'd figure out how much to send, then double it. Just in case something went wrong. From what I have observed, our capabilities and theirs in regard to weapons are wore or less equal... if you look at it gun by gun. We are ridiculously outgunned obviously." 

Zeto thought for a little taking a few seconds before speaking. With the force as big as it is, we have three options. Either pick them off at a distance to weaken them intellectually, spread them out and start engaging them since the distance will hurt their neural network, or rush in there with the tank and blast anything that fires at us. The main problem is the neural network. As the geth gather in numbers, their systems combine to run their necessary functions, freeing their processes for non-essential processes. In a nutshell, the more there are in one place, the smarter they become. Thinning their numbers serve to make them easier to fight. It was our way of building them without technically breaking the laws for building illegal A.I."