Power Man and Iron Fist is one of the more ill conceived comics that Marvel has published during its history. Both of the title characters were the leads of underselling (very) 70's titles. Power Man was Marvel's token Blaxploitation comic, and Iron Fist was their attempt to merge super-hero books with the kung-fu fad. The two characters have nothing in common and making a billionaire character like Iron Fist decide to join Power Man to form Heroes for Hire (an equally bad concept that has never worked) seemed even more forced.
However, it is to the writers' credit that the pairing feels surprisingly natural. The concept may be ridiculous, but the two characters are strong enough to survive it, albeit just barely. The plots do a somewhat decent job of merging the back stories of the two leads and the writers are seem to be very aware of the faults in the heroes for hire concept. Quite a few stories revolve around the Heroes being hired by disreputable clients and then trying to find a way to get out of their contracts and still get paid, not exactly the most noble of superheroes.
Which leaves us with some good characters, decent art, fairly good writing, but a reason for existence that is totally ludicrous.