Putrifier is no joke...not sure who told you he was easy but they need their head examined. The Putrifier is one of the most aggresive 160's out there.
It's been awhile since I fought the Putrifier...when I did I cheated and brought my bard along and discorded him first.
My suit and weapons are better now than they were then with the introduction of Imbueing so I'm confident I would fair better against Putrifier. I've been meaning to go pay him a visit with my new attire and not bring my bard along as back up.
What kind of weapon are you using against the Putrifier? A 100% Physical Damage Daisho?
What you want is a 100% Energy Damage Demon Slayer. Or a mix of mostly energy damage and a little cold would work as well. I wouldn't go less than a 70/30.
This is why I don't advocate consecrate weapon because some 160's have insane HCI/DCI and you want to be healing,countering, or buffering and not casting something that you could otherwise get around if you have the right tool at your disposal. Every second counts...
What kind of damage are you dealing out to him? 40-50 points? 50-60 points damage?
At 20% Leech against some of the top 160's just isn't enough unless your dealing out insane amounts of damage and fast. If your not dealing large volumes of damage then alot of jousting might be required.
That's why I like having Spirit Speak. It's an ace in the whole you can play when you really need it.
The Putrifier poisons alot. How are you healing? Are you using confidence?
As great as a Daisho/feint is I would consider using a 1 handed weapon and using potions.
I did better against Rikktor with my Radiant Scimitar than I did with my Daisho spamming Feint. The radiant seemed just a split second faster and I was able to leech more often and drink the occasional potion when needed.