I gotta say, i have to agree with Lex on this one for a few reasons. i was BM for the longest time and now that my gear has improved i've respecced several times to MM and SV. when i was BM, PVP for me was rather easy since i have good gear, just pop BW and you can go to town on all the casters and locks who might normally fear you with another spec. i was usually at the tops of the dps charts or pretty close to it.

now since i've specced to SV, all my stats across the board are up because of the health and agi increases. although i can put out more dps with this spec and last quite a bit longer since my armor, dodge, health are much higher, for me it goes beyond that. even though i have all the improved traps, wyvern, ect, that doesn't do crap in a BG since the traps are gonna be broken in about 2 seconds and wyvern, well, same thing. although i've done well since becoming SV, i'm defintiely not having the easiest time thats for sure. SV is great for raids and instances where you'll be around guild members or friends who actually have common sense and know not to break your traps.

So last night i decided to switch back to BM and things are back to normal, back to being nice and smooth with popping BW and killing all those dam lcoks that were fearing me all over the whole dam BG every 10 seconds. my dps has actually dropped a little, yet things seem to be far easier esepcially in BG's.
for anyone to say SV is better in BG's i think you're sorely mistaken. MM against a BM, still no competition in my eyes as i chew apart and spit out MM hunters all the time. then again, stick with what makes you comfortable, we're here to have fun and i think too many people take this way too seriously. so some of us disagree, so what, no need for us to bitch each other out. Just remember, we already rule cuz we're hunters,lol, which spec is better is just a side note