Ok the truth is, THAT IS PLAIN ENGLISH.

But let's break it down:

between two even chances

The even chances is a red herring we need to ignore it. The key is deviation.

after a deviation of x of one of them

Ok we chart our deviation from expectation here and call it X. So for example, if we received 1 hit on a single number in 111 spins, this is a deviation of 111-37 = 74 spins.

in a y number of spins minimum

Here we are defining the minimum number of spins in which the deviation has occurred. This can be theoretical based on statistical performance overall OR it can be specific directly relating to a sequence in which we are playing; the computer can easily track this. That minimum number of spins is called Y. In this case our minimum number of spins is 111.

the chance that has hit more

More red herring, ignore.

has z% probability to maintain or increase the deviation of x

Ok maintain or increase the current deviation, called Z. Any decrease in deviation will result in wins in our favor. Z is generated by the arc sine function using X & Y.

until w number of spins have been reached

Ok here W will be the target for the percentage chance held in Z. The higher Z is the more certainty we have. W is our goal for when we want our number to hit.

Z & W are the keys to HG.

The key here will be finding 0 points using arc sine. Zero points exist with SSD and so they also exist with arc sin.

I am assuming you understand about basic expectation, like a number is expected to hit once every 37 spins?