From cash burn perspective it may well be a positive as you suggest. From a sales standpoint with respect to RT002 sales on approval, I think it can have a negative impact. The best sales pitch is a simple uncomplicated one. This deal complicates the RT002 messaging in my opinion and makes me hesitant to invest additional funds in RVNC for now assuming you believe as I do that the main value prop RVNC has is in RT002 for aesthetics.
Consider all the opportunities for additional Allergan fear uncertainty and doubt. For example, lets say RT002 gets approved but endless citizen petitions and legal actions delay the Biosim. I can see Allergan saying, "what Revance really wants is to get their Biosim approved because they know RT002 is no good". or how about "why are they trying to do a biosim- is it because they know Botox is better?" So RT002 sales suffer while the biosim gets delayed for whatever reason. (Note- I think RT002 currently has a highly predictable/probable path to approval in 2019 whereas the Biosim is a long ways off and has unknown risks yet to present.)
I added the bold for emphasis. We know Allergan is pretty rattled given their reactions. This is going to be a tough battle for share. Todd Zavodnick- Revance's Chief Commercial Officer and President, Aesthetics & Therapeutics has his work cut out for him.