If you're not going to listen to my explanations than please test your
solutions yourself - before posting them.

One more time though - the math is not working again:
 delta = (initial_value - value) * leverage * config.UNIT

bear_credit = bear_escrow + (delta * Fraction(bear_escrow,
bear_wager_quantity))
bull_credit = (escrow_less_fee - bear_escrow) - (delta *
Fraction(bull_escrow, bull_wager_quantity))

delta= 1
bear_escrow(10) + ( delta(1) * (bear_escrow(10)/bear_wager_quantity(1000))
10.01
bull_credit  = (escrow(20) - bear_escrow(10)) - (delta(1) *
(bull_escrow(10)/bull_wager(10)) = 9

What I'm saying is overall is leverages don't match - more so let's assume
you always take the first leverage (or Fraction ratio) and default the
bull to the second one (to fix the sanity error).

I make a bet:
10/10 (wager-counterwager)
if matched with 10/10 (wager-counterwager):
movement per price delta = 1:1
if matched with a 10 from 1000/1000 (wager-countergwager):
movement per price delta = 1/100

result: No user control over the bet movement.

And it's not like this is the only problem with CFD's, this whole business
of monkey patching, and ignoring the what's happening and the purpose of
these instruments is just absurd.