So back in 2009 I got battlemaster done. I feel like back then it was laughably easy compared to what you face today.
I have since 2010, truth be told, not done much PvP, but one of the reasons for this is Blizzard removing full premade options. He'll, things like 250k honor kill farming in IOC in 2011 was also nerfed afaik (So much russian in IOC that year farming us....)
I feel like now days BG achievements are near impossible. A Lot of khan achievements requires a dedicated team - 5 people just won't do, and battlemaster has some achievements that would require 100's of tries in pug's.
People who grind BM/Khan now days only have one chance of doing it and thats using stuff like openraid or having a verrry dedicated 5 man group.
What is your toughs? Im sitting at 23100 points, never touched pet stuff ever (-700 points there)...if I want to go higher there are very little things I can bother/do now days, but one of them involves grinding Khan.
Also....PvP was so much more fun back in TBC when you could queue as full premade and just zerg and then like 25% of time you meet another premade.