There was no comparing unless you just want a V8. The second gen is a better truck from all objective points.
Just ignore the engine reliability issues, right?
It's not that we just "want a V8"- we want a reliable engine long term. That is *not* a small displacement highly boosted engine slathered with all the BS hoses, piping, oil and coolant lines, etc that goes along with twin turbos. They are great when they are new, but give all that rubber and plastic 10 years and 100K miles of exposure to heat and cold and things changes quick. A big n/a V8 just happens to be the ideal solution. It's not highly stressed, and it's simple.
A n/a V8 will never have a turbo seal failure, or a bad wastegate, or a blow off valve leaking, or leaking IC piping, or a dozen other things that commonly occur on turbo engines. I'm sure Ford techs are more than happy when people buy these highly stressed complex engines. Major job security.
As it was stated earlier in the thread- if you plan to keep it long term get a G1. If you are buying new every 5 years, obviously get the G2. It's really that simple. I would not want to own a G2 long term out of warranty, although I wouldn't be scared of it either. In general, Ford makes quality engines, but you will have issues with the turbo system and all of it's associated hoses and piping- 100% guaranteed.