Restoration druid tooltip spell damage not obtainable?

I’m leveling a restoration druid, just hit level 71. My wrath tooltip damage says 32,227 nature damage and every cast only does about 9,500 with crits only making it a bit over 19k. Starsurge says it should be doing upwards of 61k damage and is only doing 22k. I’m honestly not sure if this is a bug or simply tooltip error, but the damage does seem a bit on the low side of things even for a healer.