Tanks and IFVs are not a first line of offense as they should be.
And RPG is not the only direct counter to vehicles. There are many other forms that are very acceptable. It's not the damage of the RPG that's the problem, it's the flight speed of the rocket and the very minimal 'bullet drop' it has. I was on Liberation Peak at Alpha and destroyed an IFV at Charlie, barely having to aim the thing. Like I previously said. When the RPG is better than something you have to work for in an assignment, there's obviously a problem.