Not even close. 2Pac never insulted Biggie's wife, he merely claimed in unflattering terms that they had sex - it was a shot to BIGGIE.
As for the kids issue, Star went WAY overboard - his threats were pedophilic, specific and disgusting. He even issued a $500 reward for the address of the girl's school, for god's sake. 2Pac's remark was bad as well, but it was hardly to THAT nature.