Is homosexuality worse than cursing one's parents?

[RebornAtheistt]

See Leviticus 20, verses 9 and 13. Both crimes require death. Why hasn't anyone lobbied for laws against cursing parents the same as they spent $40M in California to make laws against gay marriage?

http://www.biblegateway.com/passage/?search=leviticus%2020&version=NIV