without hero, you need to focus on your "normal" rotation cause 2 WS will out-dps 1 RB and you cant stack enough haste to beat that.
the "Double Chance" wouldnt be too hard to calculate, but i dont have the means and the time to test/calculate that atm ... but its probably just a very minor detail.
well you cant run out of rage if you dont use WS and if your 2p keeps procing back to back, your rage WILL pile up just by the nature of it all.
also you can possibly only WS 4 times in a row once during burst ... MAYBE twice, but you would need to use a BT for that and get a 2nd bloodsurge proc.
In my scenario i used BT on pull to get the initial enrage and then i didnt use BT again until after all CDs ran out, cause 2p kept enrage up
i havent tested this directly but this is what seems to happen (at least this is what i saw so far):
EVERY rb crit has a 20% to proc the bonus (no matter if its a main-hand or off-hand crit), meaning every raging blow basically has 2 chances of giving you the proc.
if this is the case, you can get multiple procs from 1 RB (esp on aoe with 4stack meat-cleaver)
and i feel like this happens quite often (esp during 4p reck)...
oh and also:
can multistrike crits of raging blow trigger the 2p?
if yes, that would explain why i get those massive 2p-chain-procs during burst-phase
(getting up to over 50% ms with forgemaster)