I would have to agree to a certain point, as we saw at Whispering Pines, the QDII made it easier to get thru the same things your QTII did even less lift and A/T tires.. I also would say we dont really have much to say in comparison of whether the QTII cant do what QDII can cause we are limited to lift, tire clearance and lack of trails that we could really see both pushed to its limits or we just havent hit them yet... Id like to see a comparison done of some tough trails out west where the QDII is pushed hard and see if the QTII could keep up...