The biggest problem is that the team is used to playing through Cabaye and Tiote, Perch steps up, sells himself easily and is so easy to get past its almost laughable and the team just isn't adapting to running up the wings and getting the early pass into the front two.
Thing is, Spurs would look pretty poor if you took Parker, Modric and King out, central midfield pair is the most important area in the pitch. Guthrie I've never rated, Perch is laughably poor and the rest just aren't working together at the moment.
The fact is that you can have Perch in the middle doing nothing defensively and not helping going forwards, or put an attacking player in there to help link the team together and make the attack a real threat to Spurs.
Also any other day and a couple of those goals wouldn't have gone through all the defenders legs(though that is why its infuriating when cb's turn their backs when blocking, makes it impossible to see the ball and getting a good block in stupidly difficult), and you might have had a penalty.
its not a good performance and there is a gulf in quality, but its not that bad. A team with 3 absolute key players out having a bad game vs a complete first team having their best game in ages can always look terrible.
Spurs though, its funny how playing a basically proper 4-4-2 and two strikers can make a team play SO much better. It's whats been missing from Spurs in the past few weeks in some of their more turgid performances.
I wouldn't have expected much out of this game, even a full strength Newcastle I'd fully expect a loss, though a narrow one maybe. Understrength Newcastle wasn't ever likely to be very good.