I'm kinda new to the zone, but am not unfamiliar with 15 or 80 PvP otherwise. At first entering Canta as a lvl 30 UM Defender, I had like 1-2 pieces of dread gear that had (maybe) 1-2 links in them and were at best  with 3 other pieces heroic and had 2 heroic heaven's door, of which 1 had earth ele 1 at that time, and the other had panic 7 with no ele at all.
It took me a few days to even get into a raid, and when I did finally get into a raid, I died so fast a bunch of times, and after realizing that I wasn't going to survive long enough to contribute because (Hint: fury key on quick kill toons) of my gear being not quite ready, my frustration turned into understanding that A. It's not their fault my gear isn't better, and B. If my true desire is to be of help to the raid in a better way then I must get real with myself and take the TIME to get my gear more better...but here'es the kicker...max'd out gear helps people be more effective, but it doesn't necessarily make them a better PvPer if you were to battle those same people in the links and enchants that your toon currently has.
It's all a process, and not an event. It has been over 6 months with minimal AP purchasing to get my canta gear not all fully linked and enchanted, but linked up enough 5's and 6's with 3x dread ele 2 Heaven's Door weapons and only enchanted armor on a few pieces to like , and I have been able to do what I can within the raid, within my tab, to do enough over time to be viewed as an asset instead of a constant liability even though I still die fast at times but usually when I get ganged instead of 1-2 hit like before (which I was in the beginning to be honest).
My thoughts are this: I understand your frustration, however, you have options if you have a higher level farming toon. Ops are at a real low price right now (1.6 Bill last i checked). If you were to farm OI and get 1 craft level 6, and 1 shrewd 6, you could then sell those for the Op, and with the remainder of lapis, choose to link whatever lapis you need in your gear. This could all happen in 1 run of OI potentially (maybe more) and also be able to afford Power and defense lapisia that wont break your gear upon failure (best to attempt upgrading gears on 2-3x enchant bonus days)
With enough days of farming Oblivian Insula in this manner; with a number of runs each day, you will have the means to link your gear to be more PvP ready. Like I said earlier, I spent the majority of 6 months on my max lvl'd farming toon to not only lvl from 70-80, but farm, get some PvP in, lvl my higher lvl UM defender before I had aquired the higher lvl lapis links, and so-so enchants on my Canta set (of which I had to acquire through AP at that time because there was no dread dungeon).
Please do not lose faith in the Canta community, as it is a really good group of people. yes, there are some instances where I still feel like my toon isn't good enough for these max'd out ubers, but learning how to best PvP with my toon with the skills available to it in  Max armors (some not even to  yet and max  weapons, I can say it is a much brighter experience than being in underlinked Heroics as I used to be 1st starting out in this zone.
Take the time to think about this honestly with yourself, and forget how it felt to not be let into the raid, move on from it either by lvling out of the zone to make a farming toon (if you dont have 1) so you can provide the in-game means to compete over time, or if you do have a farming toon, make that your focus to get your gears ready, and come back ^^.
Sorry for the long post, but I felt the need to voice myself this night about this.
30 UM Defender, -Eternity-