nope, you should at least look at the lumens output for a basic idea of intensity.

HPS and MH make around twice the amount of light that floros' can..

Theres a bunch of good info on that stuff in the FAQs.
Aaron385 Reviewed by Aaron385 on . Light intensity? Does equal wattage of flouros give as much light intensity as a MH or HPS? For instance, is a 100w flouro equal to a 100w MH in the vegging stage? Could you replace one with the other without affecting crops? Rating: 5