Musk's tweet has about 200 retweets and 2.4k 'hearts' (likes), Ubisoft's has 1.9k retweets and has 9.2k hearts. Therefore, nearly 5x the number of people have interacted with Ubisoft's tweet. A 'ratio' of 5:1.
Edit: Guess that's closer to 4:1, regardless, ratio.
I believe it's likes (the heart icon) to replies (the chat bubble icon). Usually there are way, way more likes than replies: the ubisoft comment in the screenshot has 9,200/408 which is about 23. The middle comment has 2,400/318 which is about 8. Guessing that's unusually low.