Also, as far as I see, on lower levels I have "superior inferno II" that gave +75% replaced by much inferior items. So - in my opinion - the quote is far, far away from being true.
Surely that is a nerfing metamagics; still high cost of SP, far lesser effect. While I understand that balancing was (in your opinion) needed, please dont say that "it is a buff".
Well... maybe I am just angry, because I have bought the expansion before I saw what a mess the mechanics became now and wasted 35$.