Of course Piper doesn't have as much technical ability as Paul at this point - she hasn't been to the Olympics and the Worlds like he has. Paul is one of the best ice dancers out there and has more years of experience under his belt. Paul & Vanessa used to regularly beat Weaver & Poje.
But while one can argue that they may have received a few extra points at this event, the same can be said for V&M, Patrick Chan and several others as well. What's key is that G&P legitimately earned the 2nd place finish at this event.