the tests are pretty easy to get through if you dont have
coordination and psychomotor problem. it is pretty easy to tell who
has psychomotor problem just from the test itself, so basically
those who failed the psychomotor test will be going over to AI if
they are in armour.
like what ditzy says, as a tank commander, and especially when
you are a PC, you will have to control and fire the CMG (which is a
modified GPMG) with 1 hand, control the turret with the other, give
instructions to your gunner, loader, driver within your vehicle,
and give instructions to the rest of the vehicles in your platoon
under your charge, and of course, comms back to your OC or HQ for
sitrep. Why tankee is more challenging because you have a lot of
controls to deal with, the whole panel in front of you in the
leopard can make you crazy initially because there are just too
many! haha. :)
but armour is seriously very fun! haha :)