All distributions are equal for hardware support. It depends if you are willing to find the information, download the source code, compile, and install. All distributions uses the same kernel version, but there could be some [minor] differences between one distribution and the other which are mainly proprietary patches. The patches usually improves the proprietary utilities that the distribution uses.
IMHO, Gentoo is the easiest distribution for just about any hardware because someone already figure out the steps to setup the hardware that works all the time and they made an ebuild for it.