F21 System Wide Change: lbzip2 as default bzip2 implementation

[drago01]

On Wed, Apr 2, 2014 at 10:27 PM, Zbigniew Jędrzejewski-Szmek
<zbyszek at in.waw.pl> wrote:
>> ** possibly adjust spec files to require or build-require lbzip2 instead of
>> bzip2.
> Is this necessary? Wouldn't it be better to have lbzip2 Provide bzip2
> or something so that updating all those packages is not necessary,
> and also that people who prefer normal bzip2 can still use it?

Why would people prefer it? If it is the same but slower?