catman,
Don't know how you can say I don't know anything about lifting, because I've been doing it for 20 years. In college my track and cross country team was trained in the weight room by a strength and conditioning coach who knew what he was talking about, so I've had some good direction.
Body make up plays a part in the total amount you are able to lift, but 300 pounds is not that big of a deal, unless you are 5 feet tall and 90 pounds.
The world record holder in the bench press was at the Arnold classic last year, and he benched over 700 pounds. That takes some God-given talent and hard work. Getting up to 300 pounds doesn't - well, it takes some work, but not hard work.
Your example of how hard it is to be a weight lifter actually proves that it is not as hard. At the very most a serious weight lifter puts in 90 minutes a day three days a week, and they see huge gains based on that. Wow! 90 minutes three times a week - man that's hard! Some weight lifters do some aerobic workouts, but jogging at 10 minutes per mile is hardly tough.
Most of their workout (and the workout that lifters consider tough) is the anaerobic lifting part. That is about as wimpy as it comes.
As far as my own bench press goes, I have made a point of not giving out PRs, and that will go for bench pressing too. Why? Because you can't confirm them, and I could be lying through my teeth. I am not as fast as the very elite runners on this site, but faster than most. My bench pressing isn't something I do to find a max. It is just something I do for overall fitness.
Bottom line is that the schedule I gave out for improving ones bench press will work, and if that person has not really been lifting before, he will see dramatic improvements.
If you want to get ripped abs, big biceps and a strong bench press, spend 20 minutes a day 4 days a week with the fourth day (because it comes right after a hard lifting day) being a very easy high rep day. Strength and definition will occur in a matter of weeks - sometimes even more than you thought possible.
Running for performance is harder than lifting for performance. Doesn't make me a cry baby to have that opinion. I've done both, and the running is WAY harder, takes longer to see the fruits of your labor and takes more time per day to accomplish goals.