Answer:
After the game ended, were you as disappointed as Us?
Step-by-step explanation:
The correct word to complete the question is "us". Although "we" and "us" are pronouns that we use to refer to the first person plural, the difference is that "we" is a subject pronoun and "us" is an object pronoun, then as their names say they are used in the correct position in the formula according to what they represent. Us is an object in the question.