May be I am late, may be not, i have just played my 3rd game against aby, and it was the 3rd victory. And i'll tell you why.
I like to utilize storsiren. She does not look povereful, but she is able to deal devastating amounts of damage to the enemy. She can lure 2 diffetet squads tlo tidepools, and when they move- they sink to death. So, with 8 av pn the lure and may be focuser effort for inspire we beat defence of aby elite forces with no troble. Hazard is amasing!
Aby also used gas fields, they are fair, but tidepools with stormsiren kill enemies faster.
Oh, and i fprgot to mention that i like not to spend tactics tokens on cards, but to keep them, so that my opponent has no hope to kill my syrena.
The hardest operation was "set traps", in case i was forced to go throw aby's hazards to make it to anpther half of the board. And i like yarasy, too. They are a great finither to kill a fireteam wich was lured to the pool.
I do not use alpha crawler without at least 2 units of specled crawlers, because it has to be charged with reinforcement tokens. Without them it is worse then any other titan.
All in all, in my opinion gibbers have enough pover to destroy aby forces. Just remember that all your units serve only 1 purpuse: be killed to make your heroes live.)