Some quick maths using the old points system (I am bored at work, can you tell?):
Cav has 5th, 1st, 1st, 2nd, 1st all in flat stages = 22 + 35 + 35 + 30 + 35 = 157
Gilbert has 1st, 20th, 5th (medium mountain), 2nd, 7th, 14th, 2nd (medium mountain), 4th (medium mountain), 14th = 35 + 6 + 16 + 30 + 19 + 12 + 22 + 18 +12 = 170
Rojas has 4th, 3rd, 12th (medium mountain), 3rd, 5th, 9th, 3rd, 7th = 24 + 26 + 9 + 26 + 22 + 17 + 26 + 19 = 169
That would give us standings at this point like this:
Gilbert 170
Rojas 169
Cavendish 157
Still very close, obviously all hypothetical. But let's get MORE hypothetical...
Assuming for the sake of argument that Cav goes on to win the two remaining flat stages, his final total under the old system would be 227 points. That means Gilbert would need to get 58 points over the remaining stages to win. Now, four of those are MTFs, and one is an ITT, so really Gilbert would need 58 points from five stages. Let's say he wins the last remaining 'medium mountain' stage, that gets him 25 old-money points and leaves him needing 33 from two flat stages and two stages with very, very tough climbs in them.
Obviously the new system favours Cav more than the old, but either way the Maillot Vert is a very close battle that probably goes down to the wire. We'll see in two weeks whether things would have been different under the old system or not. I suspect that breakaways are going to take a lot of potential points away from Gilbert.