Having reviewed 3 out of 4 of these, I find the premise of the question invalid. There isn't an objective better here.
The TH30 has the most output. It's not exaggerating its numbers at all. It feels bulky and heavy though, the XHP70.2 does not make a pretty beam, and it has no magnet. There's a choice of color temperature, and most people prefer the neutral, which is around 4500K.
The Wizard Pro is exaggerating its output a little, even when you look up the OTF output buried in the specs page, and there's some inconsistency between samples. The magnet is very strong, and I find the headband design to be the most comfortable and convenient to install/remove of any of this style of light. There's a choice of color temperature, and the warm is a little more popular with enthusiasts, around 3500K.
The H2R does not exaggerate its output, but throttles in about 40 seconds on max. I didn't like it much. There's visible flicker on low, I found the headband uncomfortable, the plastic optic has no glass lens over it like the Wizard does, and it uses a proprietary battery which I hate with the fury of a thousand burning-hot Emisar D4s. There used to be a choice of color temperature, but no longer - it's only offered in 6500-7000K cool white.
The R3, I have not reviewed. I think the swivel head feature would be more awkward than useful for most situations, but on occasion, magnetically attached to a surface, could be really convenient. It has the lowest output of this group, and is the only one that steps down to less than 1000 lumens on a timer rather than using a sensor to step down when it really needs to. I believe it has the most throw in this group. The pocket clip design looks incredibly awkward. There's a choice of color temperature, with most enthusiasts preferring neutral white.