It is Qi so most will work it's pretty much the winner.
Care to back that claim up with some stats?
I've never seen any wireless charging technology in the wild, so I've literally no idea which one of the standards is likely to be the one that wins. From wiki-ing, I get that there are at least Qi,
Open Dots, a competing wireless power standard promoted by the Open Dots Alliance
PMA / Powermat, a competing wireless power standard promoted by the Power Matters Alliance
Rezence, a competing wireless power standard promoted by the Alliance for Wireless Power
WiPower
All of which leads me to the inevitable XKCD.
I've chosen VL-bus over PCI ; SCSI over IDE ; parallel port over USB (1.0), I dodged the HD-DVD versus Blu-Ray question by realising that neither offered any real (to me) use case. I see no reason at all to dive into another standards war until all bar one of the competing standards are dead on the field of battle.
Just checking if my current phone has a wireless charge capability - it's that invisible a technology ... well, that's a surprise - my phone (Samsung, by coincidence) actually does have an official Qi-charging alternative back cover (or flip case). That's vaguely interesting. Since I'm travelling over the next few days for business, I'll see if I can actually spot the charging places. See if they're common enough to actually be a useful discriminator (i.e. let's coffee there not here, because there has Qi pads available and here doesn't.