At any rate, even if the 1% increments aren't as precise as 1% would suggest perfectly, it's still better than the stock battery indicator. On top of the fact that I'm sure the inability to read and report the battery perfectly also affects the stock indicator, on stock the 40% looks more like 50%, 60% looks like 70%, and often the battery indicators that are floating around online simply look better, and can better match a ROM and theme. The battery indicator can't be THAT far off compared to stock, I usually don't let it go below around 30%, and if it's measuring 30% when the actual battery is at close to 0%, then there's something deeply wrong with what I'm doing, not really the deved indicator.
At a certain point you're not comparing the 1% to stock anymore, it looks like. On top of the stock battery having no text to properly explain its battery indication, my old DX stock battery would indicate fully charged while 1% said it was 95%. 5% may not be an incredible amount, and I hadn't re-calibrated the battery (read: performed battery protocol) in a while, but I've read (from you somewhere else on these forums I bet) that the battery hits around 95% or 90% when charging and then trickles the rest of the way, while stock battery indicator would show a full charge, 1% shows the trickle. (now, this is more of an educated guess than something I've researched extensively, so if it's wrong then just ignore it... I'm aware they have different batteries, but it could still be true I think)
tl:dr stock indicator looks like crap and is misleading as it is, devs make better looking indicators, imperfect as they may be.