If you bet a 2-teamer that is assumed to be properly priced at -110, you are getting +264
For something that is truly +300 in terms of actual probability (juice free world)
This post makes me realize you don't understand what I'm saying, and I'm not sure I can be clearer without a ton of words.
It's a bit like a conversion problem, but not really, it's just a multiplaction problem and I feel like you understand that but for some reason decide to leave the vig in on the individual bets then remove it for the parlay as if to say that is shorting the odds or to make a point.
I don't understand your point, it doesn't seem relevant.
If the bet is -110, the it's -110. If a parlay of two of those together pays proper, the EV doesn't change by putting them together, it's the variance that changes.