Microsoft has upgraded its surface pro 2 hardware with faster processors. But..
based on your needs (Photoshop) i would suggest a mac
1) 13 inch mac vs 10.6" surface pro 2. When it comes to photo editing the bigger the screen the better.. 13" is still portable.
2) 2560*1600 resolution vs 1920*1080 resolution. For Photo editing (and for reading text and in general) higher the resolution better the experience. Although pixel density is comparable 227 mac vs 208 on the surface pro 2.
u ll love using the new internet explorer optimized for touch,though
though there are a few more advantages of getting the surface pro 2 (don't get the surface pro battery life sucks cos of ivy bridge processor) i would still recommend a MacBook pro for ur profession/ chosen area of work
the touch and type cover have been improved upon so its comfortable for typing.. But the surface pro 2 offers only 2 angles for the kickstand. If u have glare at the second position (said to be best suited for lap use) u have to change ur posture. The macbook pro being a laptop provides more angles and the keyboard is known to be ergonomic.
price:
u may be able to get a surface pro 2 128gb for $1150 with touch cover. And a retina macbook pro for $1300. IMO u wont regret the extra $150.. Future OS upgrades may be free just like mavericks and iworks is also free.. Both will have to be bought if u buy the surface pro 2