Everyone knows that a 4-wheel drive Jeep is the hole shot king but is a brick at the top end. The 6.1 is also a top end motor. Who do you think would win in a drag race- a stock 2013 Jeep with a 6.4 Hemi or a 2008 Challenger with a 6.1 Hemi and a tune/CAI? See for yourself. 2013 SRT 8 Jeep Cherokee 6.4 Liter Hemi vs Dodge Challenger SRT8 - Drag Test Video - Road Test TV - YouTube
From experience, the 6.1 isn't all that great out of the hole. The goal is to tree them so bad they can't recover on the big end, where they tend to outshine the 5.7. Giving the fact that the AWD has a higher parasitic loss, I would still place my money on the 6.4 for the win. Remember the 6.4 is based on the 5.7, so the low end grunt is there, and it pulls all the way through the powerband thanks to the dual runner intake.
Well the Chally was tuned with an intake which might have helped a tad. Still impressed with the Jeep even coming as close as it did.