erm  snipe does arround 330 at close range like that and if ur out of her sight range then shes out of urs  and plus on most maps u  can get a double team situation like that
is she going to just sit there  not doing anything  then start running  she'll proberly have a army of creeps  and munch a shambler  and then  she will tank till shield is ready shield her self then  hol  back to full and kickone of ur asses then retreat  back into the safety of towers  re shield  munchs a shamble and charges into  the other dude
see u can't say this is how it is going to happen because that would be highly unlikely  2v1  in a what 3v3  on cata and prison is highly unlikely and the way u said it the other dude is going to appear out of no were
that would mean a ere which would get owned  by the creeps and which this is all happenigng ur 3rd will have died and  your towers would be under attack