Actually, there was no reason for the 'Lightning' to have to hold it's own at the time of introduction.
Folks didn't speed-shoot to lay down a base of fire, they shot deliberately - and pretty much any of the repros will do that reliably, when handled in that manner.
If the one you're swapping for shows good overall workmanship, and cycles easily - some clones don't - then you should have a decent shooter, so long as you've paid attention to your ammunition.
Good Luck.
Vaya,
Scouts Out!