Failing to compare big numbers

This assertions should fail, but they don't:

JSONAssert.assertEquals(
        "{ \\\"value\\\": 1234567890.1234567890123456 }",
        "{ \\\"value\\\": 1234567890.1234567000000000 }",
        true
);
JSONAssert.assertEquals(
        "{ \"value\": 12345678901234567890123456 }",
        "{ \"value\": 12345678901234567800000000 }",
        true
);