I’ve got a 3.3k Pres from last season, and 2800 Pres from this season. I ended S1 at 2.2k in RSS on Pres as well.
Counting JUST personal defensives (i.e. no spirit link, barrier, ancestral wall, etc - JUST personal, this applies to me and only to me buttons, meaning no Temp->Verd->Emerald, no Temp->Reversion anti-burst, no Rewind, no 5-wide Beacon spam, no Radiancex2+Hymn. JUST your buttons that make you take less damage, or avoid damage easier.)
Double Obsidian, Time of Need, Hoverx2->cast/move, Renewing blaze, verdant embrace for instant self heal cleave, to name a few… Compared to Disc Priest, RShaman, hPal, and rDruid - Evoker has two more CD’s… and they’re stronger than most other classes defensive CD’s, as well.
More defensive utility than any other healer - and significantly more defensive healing cooldowns, as well. Just much lower generic throughput because the healing in raids can’t be targeted intelligently (breath hits who it hits, so does spirit, so does TA)
Evoker toolkit is in a good place so far as button bloat goes, but comparing 1-to-1 on Pres throughput/panic buttons/defensive CD’s will show you fairly hand-over-fist Evoker has too many defensive options.
With no offense intended, your evoker is 700 M+ rating, and 425 ilvl. I think a bit more gear/experience will benefit you greatly.