"I'm not a tough guy, but if I fight you in a movie that I'm starring in, I'll kick your ass!"
The idea of the list was that these were the Marines that would be in the propaganda films and Imperial Action flicks (a.k.a fluff accurate) rather than the ones we normally deal with on the table top. One Space Marine REALLY should be able to take on like 50 orks.
I think with some clever adaptations, you could still fit this into a fun/friendly game of 40k 7th edition (especially hull points and weapon strengths/ap's).