For all the stuff they've published, it all feels like levels 2 through 6 in 3rd edition.
The opening 5 levels are slightly stronger than most 1st level builds in 3e, give or take some CO action.
And then it proceeds along a 5:1 ratio ... in my opinion. I don't know if this matters
.
Anyways ...
Polymorph --- 4e's Disguise Self illusion is almost Change Self. Doppelgangers use a real change, so that's slightly better, but not near what Alter Self gets. The very few 4e Polymorphs are 1 form only, with a few +2s and -2s thrown in via the "role" change and the specials in the monster block. This would be like getting Alter Self uncapped with Metamorphic Transfer feat, on just one form. 4e PCs can't do this (maybe yet). 3e Polymorph, Alter Self, and psi goodies, are way over this. So one 2nd level spell and one 4th level spell are superior, and all the way up. On could dumpster dive their way through the 4e MM, to find that special power that works with extra sauce. The 3e stuff gets it right off the bat.
Schism --- This one is easier. 4e Time Stop trades a minor for 2 standards that can't be attacks. 3e Schism can almost do this, if it was limited to just 2 rounds. But Schism routinely lasts much longer; in 4e terms it's an Encounter length power. Even if you took a Move action to Sustain it, it'd be worth it. And that's losing something in translation. If Schism was a 30th level 4e ability available 1/day, it'd still be considered broken good. Nerf bats would be used.
Dispel Magic/Psionics --- with the leveling up part, makes it a defacto 4th+ level spell. These could take down any 4e encounter or daily attack or utility, and not need any CO-ing to make it work. 4e's version only works on Conjurations and Zones. No counterspelling or similar. Level 35 monsters are immune to "attacks' from PCs lower than 20th level. That's the closest thing to 3e Dispelling in 4e. It feels more like a Minor Globe of Invulnerability expanded to other things, like an earlier edition damage reduction ability. Still, depending on the exact writing, a 3e Dispel could take down the top monsters. Ouch, really?!
My intent here, is to establish a top end power level of 4e, as compared to 3e.
The good 4th level spells of 3e, kick in around level 7. 4e can't do these.
Any other comparisons anyone wants to add?