I don't recall the IS7 being changed much or at all recently. What you're probably talking about is the IS7 being power creeped on- and to that I would agree. However, doesn't disregard the fact that the IS7 has its uses and I still like it.
i think he's talking about IS-7 from 2011 time when it reigned supreme everywhere. the tank has been nerfed quite a bit since then especially the gun.