I can have a light with 1050 lumens doing two million candlepower, and make it a two million and a half, just by putting in the same light, a bigger head, with a reflector that concentrate all those lumens in a tighter spot.
Borealis two million candlepower
Borealis two and a half million
The two (2') and two and a half (3") million heads
The Borealis with the 3" head
And a very small reflector can have the opposite effect, I just bought a small light with a Rebel 200 lumens module that can barely illuminate a target 26 yards distant, just because the small reflector spread the lumens all over the place in a big flood.
Cheers
Black Bear