You get Evan Longoria and Jayson Werth
You give: Jose Bautista and Matt Kemp
Basically, Kemp and Longoria are on the same level. I suppose some may say Werth will provide a bit more well-rounded stats than Bautista, but as the previous poster stated, this could only marginally improve your club.
If you post your entire roster, I'd be more than happy to help you analyze it.