MP is a chart. It's a different presentation of the data, but it's still a chart.
From the perspective of how I use it, MP gives me a stronger idea of where price is likely to be drawn (something a lot of traders don't really focus on) as well as where support and/or resistance is likely to develop. In all cases, MP is good for knowing the key areas rather than specific points. S/R is almost never as precise as some folks seem to expect it to be.
I'm currently using a kind of MarketProfile approach for euroBund and Corn futures.
Two very different markets, and I find it pretty useful in both of them.
Let me suggest this reads:
Steidlmayer on Markets: Trading with Market Profile
Mind over Markets: Power Trading With Market Generated Information
TraderFeed. Market Profile: A Best Practice in Trading, Brett Steenbarger