Well use a swarm of Rebel ships, like the Z-95, or X-wing, greettings.
I haven't seen TIEs vs Z-95s Swam match, but I would imagine that TIEs will have no difficulty hurting the Z-95s and the Z-95s will have dificulty with the TIEs. One extra hit is not as good as one extra agility dice.
The moment it gets close and personal, that extra dice of agility means less and less than extra "hit point", not to speak that they attack first, and do not suffer so easilly from critical damage.
It is more evenly matched that people think about it.