This topic can generate lots of argument! I've studied the Carb vs EFI argument and in my opinion direct injection does not solve the fundamental power problem of injection.
 
FWIW my opinion is direct injection probably contributes to higher power when you have to meet emissions, milage, and operability requirements.  But when considering power by itself injection, especially direct, is a loss. The lack of mass increase by the vaporization charge cooling can not be made up for by the improved air volume, and a pressure atomizing nozzle can't do as good a job as a fuel emulsifying carburetor for preparing a combustible mixture at sensible fuel pressures.
 
I have seen a patent out of Japan that is trying to get some air atomization in automotive fuel injection systems, but I can't see how that would work in direct injection. In the turbine world air atomizing fuel injectors (called "airblast") are common, but that is not so easy in a piston engine. Some aircraft nozzles even "layer" the air and fuel.
 
F1 seems to have gotten around these power problems by putting the injectors outside of the entrance of the intake trumpets in the opposite side of the airbox, so they get the vaporization advantages back. I understand they also run stupid high fuel pressures (like 1500 psi) to help atomization. Of course this is the completely opposite approach as compared to direct injection.
 
In my opinion, for a single design point, a carb is near impossible to beat for straightforward power. But anything more complicated than that single design point and the carb starts to have problems.
 
Of course this is opinion with no possibility of data to back it up, and you will find lots of counter opinions. But some of this comes from a highly respected cylinder head designer, and I've seen CFD studies on intake manifold design trying (unsuccessfully) to solve the power disadvantages of fuel injection. F1 has a lot more resources, though.
 
One other thing I've heard about direct injection is potential problems with PCV caused carbon deposits on intake valves. Apparently when you lose the fuel cleaning effect a few weird things start happening.