Yes, it did.Dune 2 didn't have a siege tank, that was StarCraft. Dune 2 had the Devastators from House Harkonnen, which couldn't kill infantry properly either you needed a trike or something else.
Devastators owned infantry - one shot.
That's my point - tank shells did not do reduced damage to infantry, they did full damage, basically ending them in one shot. Which I actually rather liked, but it made infantry mostly useless except for troopers.
It has been a long since I played the game, but I knew it so well that I still remember it quite well.
EDIT: What made tanks in general slightly less effective against infantry was their low rate of fire. They ended them in one hit, but if you had a lot of infantry, that could take a while. Troopers could do a decent amount of damage to tanks in that time, even if they would still ultimately lose.
It is interesting that Dune 2 used little of the Dune universe's technology. No lasguns, for instance, no shields either (although shields would draw worms, so perhaps that is why).


