Magic is not under powered. The game should reflect the region where its in, magic shouldn't be over powered like it was in Oblivion.
You amateurs could just spam a fire ball spell and kill anything. Oblivion had bad spell management.
Skyrim has a much better balance. You shouldn't be able to spam sparks and expect to 1HK a guard, while it takes us pros effort with a sword.
You can stand back and kill a troll without any fear of it attacking you, unlike a sword which requires proper skill.
Theres nothing skillfull about 1shoting most enemies with an end game crafted sword on master difficulty. Which is what can be achieved. Magic is underpowered so reason dictates that because of this, it takes MORE skill to kill enemies with magic. By the way, calling people who use magic users "amateurs" is not very polite. Would be like me calling you a "sword weilding meat-head who needs to learn to read and write".