I just checked my battery and mine also looks like the one on the bottom right column. However, my unit was new. Well, according to the store I bought it from, it's new anyway.
I noticed my phone getting warm but I didn't think too much of it. Is there any more concrete way to determine whether my battery is counterfeit? Everything else on it looks professional - no odd fonts or sloppy printing, no missing water damage indicator, no odd cuts. If it's a counterfeit, it's a good one.