Short answer: Droid 2 and Incredible are pretty close to equal...
The Droid 2 and Incredible are apples to apples... 1GHz OMAP in the Droid 2 and 1GHz Snapdragon in the Incredible... the Droid also runs an older OMAP at like 550MHz ... from reading reviews and spec sheets the general consensus is the OMAP seems to be more reliable and a better performer... as for actual performance the Droid 2 Benchmarks the highest of the three... That was one reason I went for the Droid 2...
Hope this helps!