Comparing Training Data - Garmin and Training Peaks

Greetings everyone.  A pretty simple question here I think but something that is driving bonkers as I can not figure out how to get the data I am looking for out of Garmin Connect, Training Center, or Training Peaks.

What I am looking to do is compare two runs (forerunner 310 XT) or two rides (Edge 800) and take a critical look at the data; such as on certain hills what was my cadence or speed etc.

Is there a way to compare this type of data almost in a Garmin Connect like player interface?  Much like you would see in a virtual partner or a ghost mode; where you would see how far ahead or behind you may be at any given point?

I hope it does not matter but I am doing this all on the Mac.  

Thanks