Eren vs this country.

He gets to go up against a much more modern society not too strong but not too weak.

Indonesia is the opponent.

No prep.

He has his titans

Reasons: Because they claim the colossal titans can "flatten the earth"...

Eren dies

Titans stomp (pun intended)

Indonesia high diff

Millions of Colossal Titans would obliterate Indonesia.

Almost no countries can beat the Rumbling without Nukes on their own.

Are you kidding? How do you think Indonesia can handle 10 million colossal titans? They just walk over the country and flatten it in a day

They'll need nukes + knowledge on titans and what the hell is even going on and then they'll need Eren's exact location at the time. And they won't have enough time to counterattack...the rumbling is quite fast.

In conclusion - Indonesia is fucked.