Firstly, since we are dealing with bitwise operations, it is reasonable to convert all values to hex:
Anti-cheat 1 = 0x50D00B6E
Anti-cheat 2 = 0x120B5C6E
Real value = 0x428C0000
Now let's define new values that are derived from these "anti-cheat" values:
Key1 = Anti-cheat 1 = 0x50D00B6E
Key2 = Anti-cheat 2 with 2nd and 3rd bytes swapped = 0x125C0B6E
Real value can then be calculated from previously defined values like this:
Real value = Key1 XOR Key2
Real value = 0x50D00B6E XOR 0x125C0B6E = 0x428C0000
Following the same steps for this example:
Anti-cheat 1 = 0x50015F1D
Anti-cheat 2 = 0x135F511D
Real value = 0x43500000
Key1 = 0x50015F1D
Key2 = 0x13515F1D
Real value = 0x50015F1D XOR 0x13515F1D = 0x43500000