In sPvP you probably just want to go full burst, which means full zerk, and just stay mobile while working with a team that has a good guardian or ele to back you up.
If you have no team to work with and you’re just goofing around in randoms then your build doesn’t matter all that much. If anything though I’d recommend having a bit of tankiness on a burst build, just cause 90% of the players running around in randoms are just full burst classes/specs so you’ll want to be able to kill them quick but survive their burst. The other 10% are tanks that can’t be killed 1v1 anyway, well not without spending A LOT of time whittling them down lol
As for WvW I couldn’t really say, I’ve got a solid s/tPvP spec and PvE spec, but I haven’t spent to much time in WvW and my bleed/flames build for PvE doesn’t work all that well, the AoE condition removal from the massive amounts of guardians and eles in WvW nullifies most of my damage :P
Oh and NEVER use healing signet in s/tPvP… NEVER! Even non bursty classes can easily burst through your regen from it and the on use heal is next to nothing, so switch to either of the other two. You might also want to consider using frenzy just cause it’s so freakin good in s/tPvP, but unless you plan on bursting people down then it’s only a ticket to a quick death, so it’s up to you.
EDIT: And if you’re planning on bursting with a rifle keep it to random pug rooms in sPvP cause in smaller groups or in any tPvP match you’ll be instantly focused and most players on that lvl know to just stay close to a rifle warrior and he will barely be able to damage you.
