can someone please help me with the differences between i5 (the feb 2011 13 inch Macbook) with this one.... i already upgraded the ram and hd.... so I'm wondering if i am missing out on speed
Honestly, no, not at all. A Early 2011 13-inch owner in particular, should NOT feel bad about this update. This was a bit of a nice one as you don't have to feel like "wish I had that update." There was virtually no change in your model, .1 doesn't mean anything.
The upgrades you did are MUCH bigger upgrades than .1 on the processor. Therefore, you will continue to have a better Mac than those who buy that i5 model today. No worries!