cam choice

ok thanks was just curious as i went on the comp cams camquest and found a equivalent cam to the crane 272-2 and it come up with the crane producing more power than the comp 280 h. I only have 1.94 inlets and 1.60 exhaust valves, i dont know if that would make much difference? I also run a 2800 stall and 3.89 gears..