Possibly, but...
They showed a quick teaser preview during Deal or No Deal last night, before the new episode aired. Hana (the Israeli girl from the last few graphic novels who can hear phone/computer/radio/tv transmissions and communicate in much the same way) found Ted Sprague in his hideout and mentioned "what they've done to us", and she was referring to the same "=" symbol, which apparently isn't a symbol but rather marks from an injection. She even showed him the schematic for the injection device and told him to "look at the needle". If you get a chance, you should try watching that. It's probably available on the heroes site, or probably on YouTube.
I think the "=" marks have a lot to do with Bennett and his organization, since Hana's graphic novel story has to do with her being "recruited" by Bennett. Parkman was also abducted by Bennett and the Haitian, and discovered his marks after that abduction. They haven't gone into Sprague's origin too much yet, but Parkman noticed they had the same marks. They probably had their powers before that, but the injection probably kickstarted them, or maybe it turned them on "full-time". That would explain why Sprague couldn't exert too much control over his powers, and ended up killing his wife with radiation poisoning.