"Uhm yes 47 degrees angled armor is better than 55 degrees angled armor."
No, sloping is accounted as angle from the vertical axis, the higher number the better.
That's why Tiger and Comet are accounted as close to 0 sloping
This is fu#!ing basics lmao.
https://en.wikipedia.org/wiki/M4_Sherman
"The Sherman's glacis plate was originally 50.8 mm (2.00 in) thick and angled at 56 degrees from the vertical, providing an effective thickness of 90.8 mm "
"Later Shermans had an upgraded glacis plate that was uniformly 63.5 mm (2.50 in) thick and sloped at 47 degrees from the vertical, providing an effective thickness of 93.1 mm (3.67 in) over the entire plate."
"EDIT: There was no overmatching for puma versus sherman front armor, as it was 51mm thick. Maybe learn what overmatching is."
http://afvdb.50megs.com/usa/m4sherman.html
"Starting in late 1943 at the Fisher Tank Arsenal, the 56° glacis on the M4A2 was replaced by a single-piece plate inclined at 47° from vertical."
The pre 1944 hull glacis was two pieces of armor casted togheter, 30 + 21mm, 50mm did overmatch M4a2 and M4a1
Kwk39 APC penetration at 450-500ms is 79-80 mm, and it did penetrate m4a2 hull despite its effective protection was 91mm because of overmatching.
So yeah, maybe YOU learn how sloping is accounted for and how armor works
When you count from vertical, the source you provided states early m4a1 model at 37° to 55° and M4A3(76mm)HVSS (easy8) at 47° which is overall improvemed in combination with thicker armor. I didnt have encyclopedia when i was writing my original post, the point was that easy8 is improvement in terms of armor in comparison to previous variants.
Your source says nothing about 39 kwk overmatching sherman armor. Also no sources of puma ever penetrating sherman front.