During the summer of 1943 when JG 52 became the only complete Geschwader operating in the East, the German boys of the Geschwader continued to chalk up air victories, with the IL-2 as the main dish.
The only theatre of the war where the Stuka remained operational in significant numbers throughout the entire conflict was precisely the Eastern Front, fulfulling its role: ground attack plane. With much less armor than the IL-2 the Stuka proved to be a highly survivable plane in the Eastern Front.
Need examples? See the air battles in the Kuban bridgehead during 1943 where large formations of Stukas of Fliegerkorps I flew in operations; they never came close to take the losses the IL-2s did, say, in the opening day of Zitadelle.
the organisation, tactics and equipment of the ShAPs in the early 1943 were still unsufficient enough to provide effective teamwork with the fighter regiments of the VVS -that doesn't mean the aircraft as such was bad. I can mention even worser examples than Kuban - just take a look at the horrible losses on the Kalinin Front in 1942, where some of the ShAP's were replaced some two or three weeks after arriving to front.
The key element though was the air superiority - the Stukas performed as bad as Il-2 when the Luftwaffe couldn't achieve any - airbattles over the Dnjepr bridgeheads are just what comes to mind where some of the STGs were decimated by the VVS fighter regiments. So my point is the losses of any aircraft type in a single operation aren't good example to estimate its combat value.
Altough I must admit the early versions of the Il-2 were far away from being of really effective CAS aircraft indeed - in fact, it was underpowered, heavy beast with poor gun and bomb sights.
Again the IL-2...
If there was a prize deserved by such plane that would be something like the "Best refugee strafing plane" as it occurred during late 1944 and 1945, when millions of civilians fled across the Baltic States and Poland, fleeing the advancing Red Army. Nobody will ever know the number of civilians that were murdered by soviet pilots.
Not a very demanding target: huge columns of civilians moving across vast portions of land...in many places there were dozens of thousands of them at the time and even more...even the hastily trained soviet pilots would hit them. Easier to kill than Panzers.
please keep such insulting comments to yourself - nobody calls Bf-109 or Ju-87a "best refugee strafing plane" ,because of what your beloved Luftwaffe boys did on the Eastern front in much greater scale when it was Russians who retreated back to Moscow and Stalingrad.