In case you haven't figured it our, the love Jesus spoke about ( since it keeps getting referred to) is self-sacrifice.
250,000 people didn't self-sacrifice.
As for the arugment for compassion being demolished because SOME people are not compassionate in the face of suffering, well...I don't really view that as an argument at all.
Your argument was that suffering can increase compassion. If it can also decrease it, in what way is point NOT a valid argument? What did they teach you in school?
That is like saying that because some people are that are loved are not loving means that loving people doesn't lead to love.
Of course not, and that's not analagous to the argument being made.
Connect the dots between "God is love" and his creation and laws and foreknowledge that it would happen causing the deaths of 250000 people. How is that love?