Last season of GOT can certainly play on the memories and HotD maybe did over-do the birthing drama just a tad. One is cool. Two is comparison. Three is ... wash, rinse, repeat no matter how well done, IMO. But different flavors in general. HotD to me relies more on display of the story and relationship than even early GOT that was relying on anticipation and execution of certain scenes.
On my rewatch, I actually wouldn't say the dragons "stole the show" as much as I liked it. The crowning scene begin to end was terrific even on a laptop. That's my stole the show if I were to pick one. For a GOT episode, to pick a non-bloody scene is real tribute to the whole enterprise.