Crystal Reports Comparing 2 Excel Sheets with Crystal Report 9

Message

I have two Excel Sheets and need to report all results which do not match between the two sheets. 
Example:
Sheet1:
Field1             Field2

  123
  15

  456
  20

  788
  30

  999
  20

Sheet2:
Field1                        Field2

  123
  10

  456
  20

  789
  30

  999
  20

I need to report the following:
Sheet 1                                   Sheet2
Field 1          Field 2                 Field 1                Field 2
123                   15                  123                10
788                   30                  789                30

I have tried to link all fields (Inner Join / Link Type =) however I get only the results which do match wheareas I want the exact opposite. I have tried to Outer Join but it still does not work.

If I try Link Type != then Crystal will report all records :(

Any ideas on how to obtain the desired results?