will be written - output is 0.5A or 1A or 2A etc
Put thing in perspective..the Higher current (Ampere) rating ,the better it is..
Most phones come with protection, it wont keep sucking high current without limiting up to it own capacity.
By chance ,I bought one HTC labelled Car charger with 2A rating from China at $5 ..i dont expect it is really going to supply that amount of current(China stuff...i just expect functional and proof of concept), if it could provide 1.2A++ ,i will be more than happy.
but it surprised me...that charger could be used to charge Nexus 7...Nexus 7 is very notorious on charger type..most cheapo type wont work at all. Indeed, I could see faster charging on my Galaxy Nexus comparing to its original wall charger ,that proved that the Chicken brand charger could supply more current.
nothing wrong with your statement, 