Sounds like this person didn't even read your copy. Seriously, who still tries to rank a website that doesn't pass copyscape. It?s understandable that a percentage of the website isn?t unique, but most of it should still be your own voice if you are trying to rank. Especially if the keywords are difficult.
Also the ads to content ratio is way off, look at ezinearticles and how they got slapped by Panda. Plus if you still haven?t figured out that onsite dup content is killing you, you need to get that fixed. Yea, each website can tolerate some and there are some authority websites ranking with this issue, but why make it hard. I used this service a bunch, you just need to know what you?re doing and yes spun content still works.