Your ignoring trials there. If we count Trials and Alliance raids, FF14 actually holds its own in the number of encounters pretty well. The only difference is the variation in difficulty levels and FF14 has less combat encounter developers. Considering FF14 has a smaller playerbase and almost certainly smaller budget it holds it's own pretty well.
WoW is guilty of massive content droughts. They may have fixed that in Legion though we are yet to see what the break between the end of Legion and the next expansion is yet but after WoD, no one should be pointing at WoW for any idea of quality content development.
