Hearthpwn

I cant really compare the two of them, as I dont play much of deathrattle hunter, or at least the classic decklists. As for Secret Hunter, for me it performs very well. I play Bearshark which can snowball the druid matchup easily in your favour. In aggro matchups it feels better than Deathrattle Hunter (my builds at least) because of secrets and spellstone. As for warrior you stand a chance only if you draw Rexxar while with deathrattle Hunter you can win without it because of cubes. Now that control mage is slightly back in the meta, maybe playing deathrattle Hunter is better overall though.