First let us define what a predicative adjective is. A predicative adjective is an adjective that modifies a noun but it is located after the verb, not before the noun as a common adjective is used. For example:
My television is expensive. Predicative structure
My expensive television. Common adjective structure
A comparative is the modification of an adjective used to compare two things. Example:
My car is faster than yours. The adjective is "fast" and it is added an "er" to make it compare the two cars, mine and yours.
The superlative is the modification on an adjective used to pinpoint or highlight something as the top of a comparison among many or all the elements in the same adjective category. Example:
My car is the fastest. I say here that among all the fast cars, mine is the one at the top of that category.
Now the paragraph:
I thought that her laughter was contagious and it had the power to spread to anyone around her. she was for sure funnier than me at the brink of seeming just too comical for an older woman. She indeed had the most obnoxious yet the funniest laughter of us all.