On a "typical" street/strip car with a pump gas 500" motor, the power difference between those heads would more than likely come down to the level/quality of the porting and prep.

The TF270's come cnc ported, so if the other two heads were prepared in a way to where they had equivalent flow to the TF heads, the power should also be very comparable.

I haven't had a TF270 on my bench, but I have had cnc ported MW victors and a bunch of cnc ported -1's on my bench, with the -1's flowing more than the Victors.

I think this is a case where exactly what the goals are, and how mild or wild the build is, should help to steer you in the direction of which heads would fit the plans the best.