only difference between the 2 setups is the location of the medic.
in the T slot, the medic adds 40 SD
in the support slot, the medic adds 70 SD (an increase of 75%)
we cant practically and objectively measure if this has any affect on his medical
effectiveness, but personally im not going to risk giving up a 75% increase in medical by
putting him on a t slot.
and as much as i like trainworld (which is a 3rd party website and not officially endorsed
by the developers), i must have missed the part where they offer any evidence or proof for
any of their claims about medics.