Sure, you're correct by your own definition, but I think calling it "Pay to Win" is a bit misleading, since the word "win" implies a competitive advantage against other players, not simply skipping gameplay. Like you said, people have widely different opinions of what they consider Pay2Win. Personally, I consider Pay2Win to be a situation where paying real money gives you a clear advantage over other players in a competitive scenario, and GW2 does not include that, at least during the time that I have played it.