It is the same aircraft, a Ju 87 G-2, and the werknummer is a little uneven. The second 9 and then the last two numbers, 93, seem lower in the better version of that photograph I have seen. It's just human error.
This is the aircraft in which, on 14th November 1944 Rudel was wounded by machine gun fire from a Soviet tank, two 13mm rounds struck his left leg. He made an emergency landing at the fighter airfield at Budapest-Badaors.
This is not to be confused with the wound he received on 8th February 1945 which resulted in the loss of his lower right leg.
For the winter camouflage white is white. The Luftwaffe/RLM didn't have a permanent white lacquer available for the first winter following 'Barbarossa' as they were not planning to still be fighting by then. Temporary finishes which weathered rather quickly were applied at or near the fronts in a variety of ways and often in a slap-dash manner.
A permanent white aircraft lacquer did become available for the second winter and some aircraft were factory finished in this winter camouflage. Being permanent it didn't wear so quickly and the finish was as neat as you'd expect from the point of production.
Cheers
Steve