RPO/RTO in a AlwaysOn cluster

Hi.  Am I correct that decision whether to host end user's application database on a AlwaysOn cluster is largely driven by user's Recovery Point Objective (RPO) and Recovery Time Objective (RTO)? Consider a typical three node cluster with 2 x HA nodes and 1 x DR node?  When we discuss RPO with user, that is the ability to recover to the last Full and/or tran log backup, correct?  When we discuss RTO is that the time it takes to failover to secondary HA node (i.e., near real time), or is it time to recover to DR node (which by definition would be longer and experience data loss)?  Thanks for helping me grasp the distinctions.