Simple question requiring simple answers
depends on what your doing in wvw.
roaming wise, the condi pvp build is more or less the way to go, since you can have mercenary amulet your looking at carrion+scavanger rune, dire or trailblazer + undead/nightmare/tormenting can work nice, perplex runes if you go for the dueling interrupt variant(if use dueling swap in some condi cleanse for portal usually or be ready to run and change utility to win, and distraction mantra and grav well cause nice mistrust procs) sigil wise corruption obviously, and doom, geomancy’s are the better ones. bursting can work too. depends on what you want more of.
if in a zerg you see a lot less use from condi due to all the cleanses around from the numbers of people so power usually works better, to do competitive damage you will need more or less full zerker, you can swap in a few marauder if you need more HP, rune wise id suggest scholar and take a gvg style focus party style build. if that doesn’t suit you well i sometimes use this build, it can still burst and if you use the CC interrupting skills wisely you can cause a lot of kills for you zerg/FP its not perfect but power mes is out the metas atm, to make it work properly you must pay attention to stab and practice timing for landing the interrupts, calamity+grav with ranged shatter and stab on the wells, CI make it necessary to both stunbreak and cleanse to get out of your grav spike if caught properly in it, between the might and vuln you put out you cause enough damage to be useful, the chrono 1-1-2 line can land you on 100% crit chance for anyone you interrupt if you have fury.
chrono line if you play closer to the FP use 2-2-3 if you prefer more collateral use 1-1-2
http://gw2skills.net/editor/?vhAQNAR8enknBlph1oBufCEgilTDqGm7Yb3gMAbIoA-T1BEQB+7CAAgjAwWUC2GdDJS9HA+QAYy+jyPSBExyI-w
since your saying 1v1 1v2 id say your looking towards the cancer aspect of things though.