The MK model has rosewood fretboard, though ...
One difference between US made Fenders and those made in Mexico and Korea, etc. is the "last touch". Fenders from Asia are produced in bigger numbers (I'd guess), so they feel a little rougher. Having said that, the difference between US made and other Fenders is getting smaller. And I've tried expensive Fenders (and even John Suhr guitars!) that I didn't like the feel of and cheaper Fenders that were great. You really get a lot for your money these days, even though you don't get the "Made in USA" stamp on it. And as Dusty said, the MK (and other artits) model is probably overpriced ...
I have no idea how your guitar feels, but taking it to a good guitar workshop and having it setup properly can make a world of difference. I just installed a Graph-Tech nut on my Strat, and it sounds and tunes better. Not to mention upgrading pickups, electronics, and hardware.
One thing you shouldn't forget is the amplifier. You can have a 3000 dollar guitar, but it will sound like 50 dollar guitar with a cheap amp. A 50 dollar guitar will still play like a 50 dollar (...), but can sound like a fantastic guitar with a good amp. These days you get fine tube amps (Vox, Laney, Jet City (by Soldano), Bogner Alchemist, etc.) that are made in Asia and are really great for the money. I just got a Vox AC15C1. Paid about 500 euros for it new, and it is just soooo sweet. And LOUD! (I was using computer-based amp modeling for a long time (Line6). It is really good, lots of options, but compared with a tube amp ... No chance. I also tried a transistor amp the other day. Just can't compare.)
My point is, unless you HAVE to have the MK signature on the headstock, you could proably upgrade your guitar and buy a decent amp for the price of the MK model ...