No, you are correct. Previously they had different price plan but now it is same. I would not suggest to see the whole data buckets and use it wisely (say one month higher and another month lower), because in case if you are running out of data, you are also booked for 90 days, so it is cumbersome to change or to take add-on's between those days.
This old argument comes back to life! I would love to see savings on 90-day plans, on both 3G speed and full LTE plans. However, that seems to not be the place where PM wishes to be at this time.
As I'm now looking to increase my costs for entertainment at home, I'm looking to switch to a more comfortable payment schedule - so I'll be moving to a 30-day 3G speed plan, or possibly an LTE plan at lower data amounts. It's all about the wallet.
Frankly - I'd prefer to the 90-day savings return, or get rid of the 90-day completely.