UA's premium cabin redemption values aren't as good as AS's, and of course you're not earning nearly as many miles on cheap economy tickets. But there's a decent bit of availability across *A, and the values aren't that much worse. A one-way saver award to Europe in J is 57.5k on UA or 70k on partners; those 135k awards are at the anytime level. And while those are certainly a poor value by comparison, they're at least an option if you have enough miles, while AS is solely at the mercy of partner saver inventory.