[QUOTE IIRC there was a switch in the way Ford rates the towing capacity for 2015. I could be wrong..
[/QUOTE]
All the truck Mfg. agreed for 2013 to use the standard SAE tow rating method for putting out standard tow ratings, so you can compare apples to apples between truck. Toyota adopted it in 2011 and continue to use it. Chevy adopted in 2013 only to drop it mid year after Ford did not follow suit. Ford knew they were coming out with an all new F150 did not want to appear to have "lower" tow ratings than competition, so they put adopting SAE off.
To put this in perspective Toyota rates every truck and SUV based on SAE rating since 2011. The Sequoia had a tow rating of 10,000 lbs in 2010, then 8,000 in 2011 - the only change was they went to SAE rating, which requires specific testing while towing a specific load while mainting a minimum speed. So to maintain freeway speed their tow rating dropped by 2,000 lbs under those conditions they had to drop their trailer weight 2,000 lbs. Most others will have similar effect, if the adopt.
All Mfg. agreed to adopt SAE by 2013, then 2015. But still only Toyota has a true rating. The rest of half ton trucks & SUV's (except Toyota) and most of the superduty truck have "marketing" tow ratings, based on the indivisual mfg. actual formula. Until the all adopt the SAE standard, the comparision is hard to make.
Link to SAE Info:
J2807: Performance Requirements for Determining Tow-Vehicle Gross Combination Weight Rating and Trailer Weight Rating - SAE International
Link to Article on History:
Truck Towing Standard SAE J2807 Update 2013 | RV 101® your education source for RV information
End of the day the 6.2 Raptor is limited in rating due to suspension, not hp, torque or gear set. Same for load limits. But with some custom Deaver rear springs you can handle a load and still have the offroad truck you bought!
The next Raptor wil be lighter, have a bit more power and more gears - all should bode well for towing capacity, subject to supension set up. Again to meet the needs of Offroad you have to give up some suspension attributes needed for towing.
So the Raptor will not be your hauler, but can serve to tow open trailers, mid size boats etc.. and small enclosed trailers and do a fine job.