The Alecto rocks but it has to be played right....it has very little armour so....it has a great gun, great detection range and is fast....all opposite of AT2.
When playing Alecto you can go spot some enemy easily and if near a bush you can fire off a few shots without being detected...and that is just a basic crew without any skills or perks....once you start adding skills/perks it can be like shooting fish in a....
The AT2 sometimes does not even get to the battle but when it does and the enemy are just pinging shots off your armour it is hilarious...( Sherman Jumbo is similar in that the frontal armour is crazy)....downsides to the AT2 are the speed, detecting range, gun is fast firing but poor and the massive cuppola that is a weak spot...see another AT2 then aim at the cuppola and/or load premium shells.