Again, been out a few years, but still surprising. The AT firepower weakness was always apparent - hence most armies relied heavily on airborn anti armour (I never play without a-10's or a manta), a hero with the anti shadowsword/eldar SHT pin point attacks, then a hammerhead formation (ions never got a look in) and several 5 piranha/1 tetra and 1-2 3 piranha/3 tetra.
While you didn't kill much armour you could bm it heavily leading to loss of activations and firepower.
Unless of course there has been a rise of 1+ activation, fearless, ra, war engine armies. In what case they are stuffed like many armies
Epic always having problems dealing with such beasts!
I can't sadly find my old batreps with the search function as I would have been interested to see what I was taking and playing against. But certainly the old armour/RA forces like the guard tank army were drawing forces where play revolved around failed activations, knocking off fast units, etc. They were also poor at taking out infantry, have they had a big boost in AP weaponry?
So how does a list like this fair now? I note the costs seem to have gone up a bit, knocking off an activation from memory, but as you say the firepower has too. Of course I always prefered the drop Manta lists. Lots of potential hi-jinks with that and most players couldn't cope with the thought of a manta dropping somewhat awkward, normally turn 2, (achieved by a late activation retain turn 1, so if it fails auto arrive turn 2).
Protector
A-10s
Barracuda
Orca
Crisis, SC, Drones
FW Mech, Skyray, Bonded
FW
Railhead, Skyray
Railhead, Skyray
Recon 3/3
Recon 5/1
Recon 5/1