Luckiest Sherman of WW2

Me and my crew were given the task to take some crossroads and I knew that enemies would be on the road so I took it nice and easy. I come to this curve that is blocked by hedges and so I told my crew to move up so I could see what was on the other sided. This is what I saw when I went around a corner; Germany's deadliest tank of WW2 with 150mm of slopped frontal armor and a 88mm gun, and its showing me its rear armor. So, I fired the first shot, didn't do any damaged, fired a 2nd shot, it started to take damage, so I fired a 3rd shot and the whole thing just went up in flames. I got real lucky because on the 1st and 2nd shot, he was turning his turret. This was actually a convoy of 1 Stug, 2 Half tracks and this KT. I managed to take out the other vehicles later, since I am aiming at the Stug in the photo.