There is no way in hell Nunes beats Tate by decision, or in a fight lasting more than 3 rounds, imo.
Nunes should be +275, minimum, true odds.
Zingano vs Pena is tougher to call. Pena is (looks to me to be) a sociopath and tough as hell. Zingano is tough as hell, without the benefit of it coming from being a psychopath. Zingano has some length advantage, better striking, but she hasn't shown an ability to maintain range. Technically, it should be Zingano. Will vs will, it could end up being Pena winning via undeterred pressure. Too lazy to look at video and come to a more informed/detailed conclusion/guess.