Actually alot of the Nexus PRO bots had alot of anti-bans and generic reply systems. 2010 was when jagex clamped on random events and one every 20minutes would occure.
These bots were alot better coded than todays and at the time Nexus, (imp soft), before their court order, along with RSbuddy, were probably paying someone considerable amounts of money to prolong the bot bust bravo that today jagex has in-put.
My opinion is jagex want more money, they sell bonds and in-game cosmetics (RS3) and have concluded that once a botter, always a botter. Nexus and Rsbuddy alike were making more profits than Jagex were at the time so something had to be done.
Maybe it's not bot busting, maybe the owners of major botting community sites are inflicting the pain under jagexs orders..
~ This is a opinion don't call me stupid.