Well, they may not have been from the same roll, but if they are found to all be Henkel tape, I'd say that is mighty coinkidental. Also, someone on here earlier mentioned buying duct tape in six packs. It's certainly possible that whoever bought this tape bought more than one roll.
The fact it is manufactured in OH, where the Anthonys are from, and it does fairly well in some adverse conditions, including heat, might be useful. If it was commonly sold in OH, then GA may have been drawn to purchasing it in FL if he saw it in a store. People often travel with the same buying habits.
The fact the tape is relatively rare (and unless all of their neighbors on Hopespring use it or anyone else KC knows has it), I'd think it would still be circumstantially significant that it is fairly uncommon and that it appears multiple times at the Anthony home (versus in some Imaginanny's apartment) or in pictures. Although the tape doesn't match the roll, the fact that, IIRC, the duct tape on Caylee was still said to be Henkel should also be significant. I hope the jury isn't talked into drinking the CSI Effect Koolaid and insist that every piece of evidence be a forensic expert's wet dream. I doubt that ever happens.
