Air to Ground attacks: did we do this right?

[Big Insect]

Certain special negate saving throws - so do provide some advantages

[Phobos]

But still hitting on 6+, do the maths.

An A-10 (220 pts) + Cluster Bombs (50) concentrates attack (20 attacks) against a Tank Unit, hitting on 6+ it means 3.4 hits, even with the cluster munition, it can´t destroy a tank unit of cheap price like T54 (85) or t34-85 (65), and not counting the price of the FAC (45 points). And that´s the best aircraft tank killer.

[Phobos]

I think it could be improved, make cluster munitions able to hit on 5+ and -1 to saves, but not automatic damage, for example.

Edit: I understand that tank killer role weighs more in the attack helicopters in this edition, but currently and in all our recent games, aircraft gave an disapointing output for their cost, even without air defences.