My experience is that it does matter, but it's not so simple, because not all Android devices are the same. Some Android devices will charge just fine from an Apple charger, some will charge slowly (regardless of amperage), and some will not charge at all. Plus, I've found that there is some variability among the Apple chargers.

For example, I have a couple of Scosche USBC202M Dual 10 Watt car chargers that are pretty nice; they are mainly designed for iphones, and they work fine on my wife's iphone, and on my LG G2 (at the full rate, as monitored by Android Tuner Pro), but my Samsung Galaxy Tab 3 doesn't even register it as being connected, even using a charge-only cable or adapter. Yet I have another car charger, also made mainly for iphone, that works on all 3 devices.

I suspect that many newer Android devices may now be compatible, where they were not in the past, although I have no evidence of this.

Traditionally, and perhaps currently to some degree, Android devices will not charge at currents above 500 ma (USB standard) unless you use a charge-only cable, which shorts together certain pins to force it into higher current mode.

So, the bottom line is, it may work fine, it may work at reduced current, or it may not work at all, depending on brand. Much of the time, when people say it works for their device, they don't have a clue whether it's working at full output.