After looking some more at it, I think we can say it's kind of a hybrid.That is not a tiger wrong front hull and wrong turret.
It not looking exactly like PZ IV is a result of mega not design their vehicles for 100% Accuracy.
The way the frontal hull slopes down is more like the PZ IV
And you are wrong about the turret placement Google images proved this was a PZ IV
You're right, Mega is never 100% accurate, and in the past they have been known to merge vehicle designs.
Let's go for a Pz. IV Tiger.