Here's a Pilot Power 3 with what looks like that 2ct thing embossed on it:

My buddy here at work told me that 2ct thing stood for... well, I forgot what
he said... but my receipt says "Pilot Road 4" on it, so I'm holding out hope
the sidewall will agree when I get to see it all the way around. Without
taking a picture, I can't read a tire's sidewall unless I position the bike so
that the sun is shining directly on it, and the sun don't shine under
my bags

... I'll have pictures from all the way around in a day or
so, maybe I can take them tonight. I've had so many wrong
tires on this bike I sure hope that I have a Pilot Road 4 on the back...
it must not be a GT since I'm sure I don't have the tread pattern
in your pictures...
-Mike