It requires at least 13 wins to get all your points, so on average 26 games. 26 games is the bare minimum to get all your points, and that's when you're in the LFR bracket of PvP: casual. If you're at proper rating, it requires 15+ wins, so on average 30 games. The average game, including queue time, is about 7 minutes in 3v3. That's 3,5 hours of non-stop PvPing in order to get this week's points for gear.
Now you may say: but a full SoO clear takes way longer! Well sure, it takes about 5-6 hours once you have it on farm. But at least you get the 50% extra valor buff for all your characters on that realm once you reach the maximum. This is not the case with Conquest points, and it's silly.
Edit: I do agree it's a bit weird that everyone, even with the lowest rating can get max PvP gear. But the people with low rating won't be a problem for fully geared heroic people anyway, since they're bad. But the rating restriction removal was needed in order to get it as balanced as possible. Imagine how unbalanced PvP would be if we still had the old system. Yeah, let that sink in. Weapons at 1800+ and shoulders at 2200+, if you didn't have those two things, it'd be impossible to win against somewhat equal skilled players.
Having gear differences in PvE (LFR < Flex < Normal < Heroic) doesn't matter. But when you're fighting other players it does.