lol i love the forums. i love reading them and usually i do it in silence but i feel like i needed to reply to this slightly old thread for all the thief youtube watchers / build readers. so i literally created an account just to reply to this (disclaimer im not trolling you this is mostly a humorous post)
so first to be on topic and answer the OP. can p/d be viable dps? i think the answer in short is yes for what you will need it for, but most hardcore people will probably disagree. will you outdps a full zerker 30(25)/30/0/0/10(15), probably not. you will live more with a similar wild bill spec in pve thats for sure. you can easily stack 10-20 bleeds on a target ticking for 100-130 depending on the situation, plus if you count direct damage from application thats 1k-1.3k dps per 10 bleeds on top of DD, thats pretty good probably around 2-3k dps from range. i actually run p/d currently for pvp and pve and i do fine dmg and i feel especailly in the non-hardcore dungeons that i contribute quite a bit and am usually the last one standing.
so long winded answer, but short answer is yes you can make p/d a viable spec for pve and deal decent damage. in aoe fights spam cluster bomb which stacks bleed too along with caltrops and u are doing just fine, but probably will get a ton of aggro and die. oh wait stealth and regen no you wont
now to address the part of this post that i really wanted to YOU GUYS CRACK ME UP. everyone watches wild bill or jinzu or nemeric (whatever the spelling on his name is) and you are like OH if i spec like him i will faceroll zergs by myself! then you try and are like oh wait why cant i do that?
let me answer that for you. 1) these people are epicly good players with a ton of practice, 2) you arent getting their same damage? i wonder why, oh wait a) you arent even level 80, but lets assume u were,

in wvwvw gear matters and there is no way you are geared like them. they are full exotic at least. not to mention their builds call for REALLY expensive runes and sigils that you probably don't have. also if you do have them you will notice (especially in jinzu's videos of omgzzlolzzorz backstab damage) he has 25 stacks of power from his superior sigil of bloodlust. that is ridiculous to think you can maintain unless you NEVER DIE in wvw. some guys like nemeric actually dont die and you can literally watch his stream and him gain stacks of bloodlust and not lose them BY ONLY KILLING PLAYERS, but like i said these guys are epic.
wow point 2 was long. but yea wild bill does have mad skills, i have taken my p/d into wvw and ive facerolled a few people pretty bad in the middle of a zerg and not died and im not that awesome, but definitely above average. the point of this one is a lot of people in wvw are REALLY BAD which makes it SO EASY to post videos like this. this is probably why you dont see more videos of tpvp faceroll specs because its much harder to do and you cant count on 25 stacks of bloodlust to make your numbers ridiculous and 3 shot ppl.
bottom line is, gw2 rewards skill probably more than any mmo ive ever played and thats a ton. also GEAR. happy hunting guys i hope you play p/d in pve its a ton of fun and i barely ever die unless im in a terrible group and put the team on my BACK! lol