I just took a screenshot off the link provided from y'all to compare differences. Overall lengths on the Compact and Regular 2.0 only make for .1 of a difference.
I'm personally not impressed with that at all. Some of you could argue .1 could make difference. I don't think it's worth losing 2 rounds over in the facet of overall length.
As stated by some already, overall height is not listed. Hopefully that difference is more substantial as the grip is the hardest for most people to conceal.
I hate to use Glock as an example, but the differences between the 19 and 17 are substantial in reference to numbers comparing overall lengths and heights. I've opted to carry the 17 over the 19 because I don't notice the difference when carrying and concealing. I feel the same will be for me between the M&P 2.0's