Elec is better.
How are your shield scrapper, bane, claws/SS brute(s), and /traps corruptor coming along?
lol so you do keep track 
Shield scrapper was abandoned because I have a graphical bug that I cant fix with them, Bane I have on 24 and not overly convinced of it, never made claws brute in the end, SS brute got switched for SS tank and traps corr got switched for fire/storm and is on 35 lol.
Been busy lately, however I played tank for a few years as Invul/SS on EU and PvPed there which I enjoyed but this was pre i13. Elec is the only tanker set I havent played yet and I could do with a PvP charecter now since im starting to get bored of PvE now.
Invuln has Dull Pain, which is nice for erasing an entire spike, but Elec has a neat bunch of tricks (notably really high energy resist for all the EM and Elec Stalkers out there). You've got to build Elec for knockback protection, unlike Invuln, but it's worth it. Even without a +HP power, Elec Tankers can be ridiculously hard to take down.
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"One day we all may see each other elsewhere. In Tyria, in Azeroth. We may pass each other and never know it. And that's sad. But if nothing else, we'll still have Rhode Island."
"One day we all may see each other elsewhere. In Tyria, in Azeroth. We may pass each other and never know it. And that's sad. But if nothing else, we'll still have Rhode Island."
Thats good to know, -knockback isnt hard to get either with IO's.
Also you get major endurance drain and recovery resist as elec armor. Yea so Elec tanks are very hard to drain.
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Simple question,
Which one plays better in pvp currently or are they roughly the same?
As I see it elec can get more resists but 0 defence, whereas invul gets some defence but less resists, I would have thought elec would be better simply because the defence value of invul would be low still regardless of slotting thanks to DR and make it useless, then resists would be hit too leaving it less than useful.
Elec however has no defence in first place and has higher resists so will end up on a higher number of resists after DR hits, and it has power sink for endurence recovery help.