Ok, I'll play Devils advocate here. Tigers arrived in Africa starting post Torch landings in Nov 42. Their first combat actions were within a month or so in Dec 42. All Tigers in Africa captured or destroyed by May 43 when Africa falls to the Allies. Guns that potentially could have fired at the Tiger in that time period: Tank guns 75mm on M3/M4 Mediums, 6 pdr on Crusader, 2 pdr on Crusader/Valentine, 37mm on M3 Medium/Light; SP non tank guns: 3in on M10 GMC, 75mm on M3 GMC, 105mm on M7 HMC, 25 pdr on Bishop, 37mm on M6 GMC; Towed AT or Field Guns:25 pdr, 17pdr, 6 pdr, 105mm, 37mm. Both the 105mm and 25 pdr put out a big round, but at not very high velocioty, so could produce big divits in the Tigers armor without a penetration. There are numerous recorded instances of these guns being used in direct fire mode against German tanks in Africa during this time period. The 17 pdr which first saw action in Tunisia would penetrate the Tiger and make the battle damage and theme of the diorama a moot point. As already pointed out here the 75mm gun would not leave such big damage. The 3in gun on the M10 would leave a larger hit, but not overly so compared to the 75mm, even with its' higher velocity/flatter trajectory. Hits that penetrate the stowage bin would impact against the turret armer beneathe and send out shrapnel from any non penetrating hits back into the stowage bin to further damage it.
As far as troops go, elements of the Herman Goering Division were sent to Africa post Torch as well. They have been known to wear a combination of the Luftwaffe tropical filed uniform along with SS smocks during the Tunisian campaign (at least according to what I have seen in Osprey and Concord books).
So the diorama itself is entirely plausible in concept, but could use more refinement in execution detailwise.
F is for FIRE, That burns down the whole town!
U is for URANIUM... BOMBS!
N is for NO SURVIVORS...
- Plankton
LSM