Earthling is slower than Ilwrath which can also fan out the flame thrower and destroy incoming missiles. Alliance should follow up with Shofixti after the Earthling is destroyed by Ilwrath.
Yeah, IIRC the Ilwrath is helpless against the Shofixti because the Shofixti is agile and has a longer-range weapon. You can shield from the Shofixti bullets a little bit with flames but basically unless the Shofixti player screws up really badly the Ilwrath has no hope. Usually the Chenjesu also utterly cremates the Ilwrath before the Ilwrath can get close.