Bundling games with a console is like a price drop without the drop. Both of those titles currently retail for $60, if you buy them separately. If you bought a PlayStation 3 and those two games, you'd end up paying $520 before you even added another controller. But since they both come bundled with the console, you can have $520 worth of entertainment for $400. That's a $120 savings that might make some consumers think twice about the PlayStation 3.
And isn't that the point in the first place? For the last year, Sony hasn't enjoyed a single competitive advantage over Microsoft and its sales have shown that. But now that those bundles are available, Sony might be able to claw its way back into the race, even though Microsoft offers bundles of its own.