Left Deep Blue Daynight T100 65 tube
Middle Ball Spacemaster X-lume 80 tube?
Right Ball Hydrocarbon Mad Cow 15 tube?
Not comparing the watch, just the tube layout. In real sight the Deep Blue is the brightest(probably because of the tube color) the Deep Blue and the xlume are both "T" rated and the Mad Cow is T25. I would have thought the T25 would be just as bright considering it has less tubes. Assuming all three watches are as close to maximum tritium(and if my math is correct) the T25 should have more tritium per tube.