Count of images in built in converted

Embeddable::ImageQuestion.joins(:converted_interactive).where("drawing_prompt like '%<img%' or prompt like '%<img%'").count
=> 60
Embeddable::OpenResponse.joins(:converted_interactive).where("prompt like '%<img%'").count
=> 1525
Embeddable::MultipleChoice.joins(:converted_interactive).where("prompt like '%<img%'").count
=> 622

ManagedInteractive.where("legacy_ref_id is not null").where("authored_state like '%\\u003Cimg%'").count 
=> 2218

For some reason I don't understand the `<` character gets turned into `\\u003C` when searching `\u003C` and `<` match. 
But `\\u003C` do not.

acts = ManagedInteractive.where("legacy_ref_id is not null").where("authored_state like '%\\u003Cimg%'")
  .includes(interactive_page: [:lightweight_activity]).all
  .group_by{|i| i.interactive_page.lightweight_activity};nil

irb(main):035:0> acts.count
=> 1519

irb(main):038:0> projs.keys.size
=> 17

irb(main):041:0> projs.map { |proj, acts| [proj&.title, acts.size]} 
=> [["Molecular Workbench", 7], ["High Adventure Science", 29], [nil, 181], ["Interactions", 67], 
["RITES", 2], ["InquirySpace", 13], ["NGSS Assessments", 18], ["ITSI", 1116], ["Building Models", 12], 
["InquirySpace 2", 13], ["GEODE", 19], ["Precipitating Change", 6], ["ConnectedBio", 16], 
["Geniventure", 1], ["Default Project", 2], ["GeoHazard", 13], ["GeoCode Tephra", 4]]

mis = ManagedInteractive.where("legacy_ref_id is not null").where("authored_state like '%\\u003Cimg%'").includes(interactive_page: [:lightweight_activity]); nil

mi_info = mis.all.map{|mi| {url: "https://authoring-migrate.concord.org/activities/#{mi.interactive_page.lightweight_activity.id}/pages/#{mi.interactive_page.id}/edit", mi_id: mi.id, authored_state: mi.authored_state} }; nil

require 'csv'
output = CSV.generate do |csv|
  mi_info.each { |mi| csv << [mi[:mi_id], mi[:url], mi[:authored_state]] }
end; nil