Late MBP 15" is relatively slow!

Ciao everyone,

I went to the Apple Store because I wanted to buy my first Apple product - a MBP 15" late 2013 (the base version, with 8 gb of Ram, 2.0 ghz of CPU and 256 gb of SSD) - but when I tried it and played with it a little bit it felt very slow compared to my mate's MBP 13" 2012 model (4 gb of RAM, i5 2.5 ghz CPU) non retina. I didn't even find any video review of the base model on YT so I can't compare the model I tried with others to see if mine was a bad exception.

If I'm going to spend almost 2k$ on a laptop I want it to be super fast, even more since it just came out with all the latest tech.

Could it be that the retina display slows things down?

Moreover, is the base model enough for bootcamp windows 7/8? I don't want to add 600$ for the top version, but if I MUST in order to have a good machine then I'll spend the extra money.

Thank you in advance for the help!