So we got this in HW:
  1. 18 dungeons
  2. 7 story trials
  3. 7 extreme trials
  4. 3 24m raids
  5. 12 story raids
  6. 12 savage raids
  7. The Feast
  8. Seal Rock
  9. Shatter
  10. LoV
  11. 1 instance zone(taken down and revamped at later date)
  12. Hall of the Novice
  13. Garo Crossover
  14. Yokai Crossover
  15. 3 Beast tribes
  16. 3 jobs
  17. PotD 200 floors
  18. 1 custom delievery npc
  19. Anima questline
  20. Aquapolis
  21. Squadrons
  22. Templeleves
  23. Airships
  24. Aertherial wheel
  25. Orchestrian
  26. Flying

In Sb we got:
  1. 15 dungeons
  2. 8 story trials
  3. 8 extreme trials
  4. 3 24m Raids
  5. 12 story raids
  6. 12 savage raids
  7. 2 ultimate raids
  8. Astragalos
  9. Hidden Gorge
  10. Mahjong
  11. 2 GS gates
  12. Fashion Report
  13. MHW collab
  14. FF15 collab
  15. 3 beast tribes
  16. 2 jobs
  17. 1 limited job
  18. 4 instance zones(BA is included with Hydatos so its here)
  19. HoH 100 floors
  20. Doman Reconstruction
  21. 3 custom deliveries
  22. Canals of Uzanir
  23. Hidden Canals of Uzanir
  24. Squadron command missions
  25. Submarines
  26. Glamour Dresser
  27. Swimming

So from HW to SB we gained(+) and we lost(-) was:
  1. - 3 dungeons
  2. + 1 story trial
  3. + 1 extreme trial
  4. + 2 ultimate raids
  5. - 1 PVP mode
  6. + 3 instance zones
  7. - 1 full job
  8. + 1 limited job
  9. - 100 PotD style floors
  10. + 2 custom delievery npcs
  11. - 1 Relic questline
  12. + 2 map areas(we had 1 reskin and 2 additional afterwards)
  13. - battleleves
  14. + 2 GS gates

Most everything else cancels each other out now these lists do not include every item/mount/minion/msq/sidequests just the bigger features of each expansion(if they were talked about at live letters/shown in trailers as features). As a whole SB has offered more content to players but it did take things away it is whether what was taken away was worth what we gained as a result and that is down to each individual themselves to assess but factually we got more content with SB than HW and we haven't finished updating SB yet(Yojimbo may or may not have trial so not included until we know if it does).