Translating Chinese is as easy as drinking water for the great and powerful…
Sorry, here we go:
Strip on the right:
RD: That pony has such a serious face
Pinkie: Oh? I can make her laugh in 5 seconds
Pinkie: Hi!, I’m Nicholas Cage
Octavia (?): …
Pinkie: …She is a strong opponent!

Strip on Left:
Pinkie: Round 2!
Pinkie: Hey…
Book: Beethoven (is eating corn flakes) <-- (is eating corn flakes) is written by hand, and cereal bow is doodle
Pinkie: Pfffff (she’s failing to hold her laughter)
Pinkie: Fine, you win for now!
RD: What are you doing…
Pinkie: (!)

@Rosemary
Thanks for the translations!
Not that they help to make any sense of what's going on.
Tony the Tiger and Beethoven?
Zuh-huh?