Tech is always an interesting thing for just that reason - the levelling factor. Crossbows were considered hideously dishonorable and were illegal for a long time because they allowed someone without years of training and heaps of equipment to take out an armoured knight (i.e. someone who'd spent time and money on training and equipment, and was therefore rich and high status).
BUT. Magic is--or should be--just another sort of technology. Technology is just harnessing the laws of nature to achieve a purpose with tools. Magic is just another law of nature. Any effect that can be achieved with technology should also be achievable with magic. Indeed, could possibly be achieved faster, harder, higher, better. This is
magic, after all.
I'm thinking of Daniel Polansky's Low Town books--specifically the second book,
Tomorrow the Killing, wherein there's a fantastic analogy of the First World War (i.e. the war where technology really made a mess of the romantic concept of war as limited) as fought with magic as that technology. Magic mines, grenades, bombs, gatling guns, etc. The PTSD remains the same.
So I guess it comes back to:
Most magic systems I've read makes them still dependant on physical capacity of the user which gives technology a big advantage.
But systems don't have to be shaped like that. It's your choice as author.