Alas, I don't have access, I was just working off of what was posted on gleemax 4e CO.
EDIT - nope see below
So, I have no idea how many power points a 4e Psion has, but I can guess.
2 pp separates an At-will from an Encounter, and you have 4 + 7 + 2 = 13 encounters = 26 pp.
Easy enough. And then you'll get a little more via class features or whatever.
EDIT - this still applies
The psion side isn't really possible to be broken.
I'm saying that Encounter Recharge mechanics, completely independent of psionics,
now can be rated (if that's the right word) or more accurately compared, to the amount of pp.
And the encounter recharges usually offer way more pp-equivalents, than straight psionics.
Example:
Swordmaster paragon path level 16 class ability.
Recharge encounter on crit.
1/20 or 1/10 or 3/20 or even 1/5, of every attack generates 2 pp equivalent.
That's gonna be waayyy over what a psion gets.
Balancing all that:
1 pp augments are lots more flexibility, than not having that at all.
At-wills instead of encounters from level up, are lots more flexible too.
Sort of a Kiter's super tool kit; not that I like that concept.
So, flexibility vs. giant piles of powerpoints.