The actual height of the Namer, which the Panther is based on, is 2.40 meters ~ish. It is certainly below 2 meters for the ingame model. The sizes of the other IFV may be off too, I have not tested yet.
This is the same problem as we had with the M1 back in OFP times, which was eventually changed as far as I can remember. It would be great if these vehicles could be realistically scaled from the outset.
Now with the game released, the Merkava turns out to -also- be too small. Its size is more corresponding to a T-72. These two vehicles need to be upsized significantly. Ingame height of the Slammer appears to be about 2.20 meters, ~40 cm short of its actual height (this is assuming a height of 1.70 meters for the ingame humans.). I didn't do exact measurements, but the sizes are so out of whack it is obvious enough without that.
Picture links below. {F20895} {F20896}