You must have noticed that Greece does not make decisions for, or try to impose its decisions, on the RoC. Look at what happened with the referendum. The newly elected Karamanlis government wouldn't take a stance as far as the plan went, until T-Pap stated he was against it. Then, Karamanlis came out and said, 'well, whatever the Cypriots want to do is fine with us' (and later, post-referendum, openly spoke for the need for a solution based on the plan), whereas the 7-year socialist government that had just stepped down was hell bent for the plan all the way.
The game must be played according to its rules. They always played this game according to its rules except the killjoy actions of far right led by Grivas, Junta and Grivas. It's not hard to play this game according to its rules and create different impressions that would serve to avhieve their "national cause". TCs fumbled to play this game this according to its rules because noone could manage to silence the voice of TC left wingers. On the other hand, there are so many GC left wingers admited that their voice silenced by despot party leadership for the so-called "national unity".