What's Matt's truck ran ET/MPH is what a stock 5.0 runs with sticky tires. Mine 2012 dyno'd at 394hp with nothing but a Ford Racing tune. With headers, intake and a good tune they usually make close to 440 at the wheel on a 3700 lb car. And Houston is pretty well known for its street scene (ie, lot's of modded Mustangs).
So certainly not taking away from Matt's accomplishments or your truck. Just said I wouldn't go picking on too many new 5.0's.
1) I don't put much stock in dyno numbers anymore. Plain and simple, they can be fudged any way you want. I had a 2008 Bullit that dyno'd at 407 at the wheels, but ran in the 10s at 3800lbs with me in it. The reason why is the dyno wasn't setup with the correct inputs for my car. I'd also be interested to see if it was a Dynojet or another brand that it was done on.
2) We already established that the Ram is half the price of the Mustang in this case. That leaves you at least 10k in mods to catch up to the Mustang before the dollar figures are even close.
3) I'm well aware of Houston's car scene. I've beaten quite a few Mustangs, Camaros, Challengers, etc. at RPR though. They weren't all new models, and I can't say what those guys are running, but my guess is they weren't heavily modded. Besides, if I really want to run them I have a 10 second Vette I can throw on the trailer and take out.
Point is that for what these trucks are; mostly stock vehicles that can pull twice their own weight, they are fast, and Matt has the fastest NA one right now. We all recognize that these are trucks and are in a separate class than muscle cars, but these trucks are actually competing against some of these cars and winning.