I'm sure this was just bad luck or a bad script. I'd say overall TriBot anb OSBot are quite close in functionality, TriBot API is better though (making it nicer/easier to script for), just depends on how wellmade the scripts you use are.
TriBot/OSBot themselves do all they need to do just fine, it's scripters/users who need to utilize the bots/API and make good scripts. I'm sure there are plenty of premium scripts for both Tri and OS which are just as good as the Nexus scripts were.
RiD is FAR from the closest things to Nexus. First of all Nexus used reflection(or injection) and RiD only uses color which alone makes it WAY more limited in every way. There are no RiD scripts that even walk/bank so how can you say that RiD is the next best thing after Nexus? Plus their script both in feature and quantity are very limited. TriBot/OSBot are hands down the best RS07 bots out there.
Google "Snellman Bros" or "Jagex vs Impsoft" and you can read up the court documents about the case, very fun read! I think there are two different ones floating around the internet:
http://www.scribd.com/doc/78898058/Jagex-vs-Impulse-Software-Agreement-for-Judgment
http://www.rfcexpress.com/lawsuits/...191/jagex-limited-v-impulse-software/summary/