A little off-topic, but what actually put me off from GW2 was the fact that they did not care about PvP at the start, at all, that was a huge mistake on their part. Don't get me wrong, I had high hopes for this game and our guild was in top 3 or something on our server.
They gave everything that is annoying about WoW, from free PvP gear for everyone to free character migrations, but the execution was poor. There was no incentive to play tournaments because you ended up roflstomping the first two teams and then either roflstomp the third map as well or just get annihilated with 2-3 Mesmer/Guardian comps (we even won a tournament with 4v5 on all maps, since one of our mates got DCed).
Even though fights can look like an "AoE clusterfuck" to an untrained eye, we all had coordination and we knew what we were doing and what our opponents were doing. It's just the lack of basically any updates regarding PvP lead to a near-forgotten game and it took them months to fix the damn HS/Frenzy spam, which was annoying as fuck, even if you dodge the last two (which I usually did), they can still kill you. (I was a Necromancer)
PvP in release was very poor. However all the issues you described are now fixed (ie: now you fight teams with similar rating to yours)