I agree with this. The Surface is a really beautiful device. The problem with it is that it's something of a hybrid between a laptop and a tablet, and yet it gets compared to straight tablets (as defined by the iPad and Android tablets). As a pure tablet, it's not that great. The battery life can't compare and it's heavier. It has more potential than just that, but the potential is overlooked because that's not what most people are using their tablets for.
I use my iPad mini for work. Remote desktop, presenting Keynote presentations made on my Mac, note-taking applications, information lookup through dedicated app... it's all there. This is not a gaming device or a "toy." A Surface could probably perform those same functions, but the weight and relative lack of battery life make it a no-go for me. It doesn't help that it doesn't nicely integrate into the Apple ecosystem, either.
Honestly, if I were a college student today then the Surface would be a very compelling device. It can function as your primary system, yet it's portable and tablet-y enough to be used in that ultra mobile tablet-like fashion. It doesn't particularly excel at either, but when you don't have the luxury of storage space or money then it'll do quite nicely. On the other hand, if you already have a Mac system and an iPad then the two make for a very compelling combination that can accomplish quite a bit. It's personal preference.